Liabilities / Assets
9th percentile
Tied with the lowest-debt nonprofits in its peer group.
EIN 54-2019179 • 501(c)3 • Fairfax, VA
Profile
The fairfax county park foundation supports the fairfax county park authority by raising private funds, obtaining grants and creating partnerships that supplement tax dollars to meet our community's needs for park land, facilities and services.
Precomputed percentiles relative to similar nonprofits. These scores are descriptive rather than judgmental.
Liabilities / Assets
9th percentile
Tied with the lowest-debt nonprofits in its peer group.
Liabilities / Revenue
10th percentile
Tied with the lowest-debt nonprofits in its peer group.
Net Margin
96th percentile
Higher net margin than 96% of similar nonprofits.
Top Officer Pay
66th percentile
Higher top officer pay than 66% of similar nonprofits.
Top officer pay equals 3.6% of source-year revenue.
Asset Growth
98th percentile
Faster asset growth than 98% of similar nonprofits.
Revenue Growth
94th percentile
Faster revenue growth than 94% of similar nonprofits.
Assets
Up$5,376,478
Up $3,869,050 (+257%) from 2024
Liabilities
Flat$0
Flat from 2024
Net Assets
Up$5,376,478
Up $3,869,050 (+257%) from 2024
Revenue
Up$4,731,701
Up $2,883,882 (+156%) from 2024
Expenses
Down$1,051,106
Down $1,191,032 (-53%) from 2024
Net Income
Up$3,680,595
Up $4,074,914 (+1033%) from 2024
Most recent year
2025 • Form 990Detailed filing. Detailed filing data is available for this year.
The fairfax county park foundation supports the fairfax county park authority by raising private funds, obtaining grants and creating partnerships that supplement tax dollars to meet our community's needs for park land, facilities and services.
The fairfax county park foundation supports the fairfax county park authority by raising private funds, obtaining grants, and creating partnerships that supplement tax dollars to meet our community's needs for park land, facilities, and services.
| Line | Beginning | End | Change |
|---|---|---|---|
| Assets | |||
| Investments in Publicly Traded Securities | $468,670 | $4,213,651 | ▲ $3,744,981 |
| Cash and Non-Interest-Bearing Accounts | $905,273 | $798,165 | ▼ $107,108 |
| Pledges and Grants Receivable | $133,485 | $364,662 | ▲ $231,177 |
| Total Assets | $1,507,428 | $5,376,478 | ▲ $3,869,050 |
| Liabilities | |||
| Total Liabilities | $0 | $0 | → $0 |
| Net Assets / Fund Balance | |||
| Net Assets With Donor Restrictions | $1,308,807 | $5,039,789 | ▲ $3,730,982 |
| Net Assets Without Donor Restrictions | $198,621 | $336,689 | ▲ $138,068 |
| Total Net Assets Fund Balance | $1,507,428 | $5,376,478 | ▲ $3,869,050 |
| Total Liabilities and Net Assets / Fund Balance | $1,507,428 | $5,376,478 | ▲ $3,869,050 |
| Period | Beginning | Contrib. | Gain/Loss | Other Uses | End |
|---|---|---|---|---|---|
| 2024 | $606,399 | $3,465,415 | ▲ $217,604 | - | $4,289,418 |
| 2023 | $559,658 | - | ▲ $46,741 | - | $606,399 |
| 2022 | $540,798 | $3,153 | ▲ $15,707 | - | $559,658 |
| 2021 | $539,854 | $551 | ▲ $393 | - | $540,798 |
| 2020 | $464,368 | $73,937 | ▲ $1,549 | - | $539,854 |
| Name | Title |
|---|---|
| Anita Herrera | Chair |
| Laura Eakin Erlacher | Vice Chair |
| Gary W Kirkbride | Director |
| Harrison a Glasgow | Director |
| Kevin Ta | Director |
| Michael Gailliot | Director |
| Thomas Chennikara | Director |
| Roberta Longworth | Executive Director |
| Robin Walker | Secretary |
| Rich Harpe | Treasurer |
| Line Item | Amount |
|---|---|
| Grants and Similar Amounts Paid | $949,371 |
| Other Expenses | $101,735 |
| Total Fundraising Expense | $24,621 |
| Professional Fundraising Fees | $0 |
| Salaries, Compensation, and Employee Benefits | $0 |
| Line Item | Program | Management | Fundraising | Total |
|---|---|---|---|---|
| Grants to Domestic Orgs | $949,371 | - | - | $949,371 |
| Fees for Service Investment Mgmnt Fees | - | $14,909 | - | $14,909 |
| Fees for Services Accounting | - | $11,434 | - | $11,434 |
| Conferences and Meetings | - | $8,375 | - | $8,375 |
| Other Expenses | - | $7,331 | $21,395 | $7,331 |
| Information Technology | - | $6,670 | - | $6,670 |
| Office Expenses | - | $3,461 | - | $3,461 |
| All Other Expenses | - | - | $3,226 | $3,226 |
| Insurance | - | $868 | - | $868 |
| Total Functional Expenses | $949,371 | $77,114 | $24,621 | $1,051,106 |
| Line Item | Amount |
|---|---|
| Total Expenses per Audited Statements | $1,600,340 |
| Total Expenses per Form 990 | $1,051,106 |
| Expenses per Audited Statements | $1,036,197 |
| Expenses Not Reported on Form 990 | $564,143 |
| Expenses Not Reported on Financial Statements | $14,909 |
| Recipient | Location | Category | Purpose | Amount |
|---|---|---|---|---|
| Fairfax County Park Authority | Fairfax, VA | - | To Support Various Projects Maintained by the Park Authority | $949,371 |
| Line Item | Amount |
|---|---|
| Professional Fundraising Fees | $0 |
“A draft of the form 990 was given to the executive director and the members of the audit/finance committee of the board of directors for review. Additions and corrections were made as necessary.”
“The executive director and foundation employees are fairfax county government employees. Their compensation and other terms of employment are determined by the fairfax county merit system ordinance and personnel regulations. The ordinance and regulations are administered independently by the fairfax county human resources department which sets compensation ranges based on comparability studies and regulates and oversees all compensation adjustments.”
“The fairfax county park foundation's form 990, financial statements and annual report are available on its website and the foundation's form 990 is available on the guidestar website. The governing documents are available upon request.”
“No change has been made to the oversight process”
“Uncertain tax positions - as of june 30, 2025, the foundation had no uncertain tax positions that qualify for either recognition or disclosure in the financial statements. The tax years subject to examination by the taxing authorities are the years ended june 30, 2021 through 2024”
This appendix keeps the raw XML leaves available for debugging and edge-case review. The human report above is the primary experience.
| Path | # | Value |
|---|---|---|
| IRS990/AccountantCompileOrReviewInd | 0 | 0 |
| IRS990/ActivitiesConductedPrtshpInd | 0 | 0 |
| IRS990/ActivityOrMissionDesc | 0 | THE FAIRFAX COUNTY PARK FOUNDATION SUPPORTS THE FAIRFAX COUNTY PARK AUTHORITY BY RAISING PRIVATE FUNDS, OBTAINING GRANTS, AND CREATING PARTNERSHIPS THAT SUPPLEMENT TAX DOLLARS TO MEET OUR COMMUNITY'S NEEDS FOR PARK LAND, FACILITIES, AND SERVICES. |
| IRS990/AllOtherContributionsAmt | 0 | 4674104 |
| IRS990/AllOtherExpensesGrp/FundraisingAmt | 0 | 3226 |
| IRS990/AllOtherExpensesGrp/TotalAmt | 0 | 3226 |
| IRS990/AnnualDisclosureCoveredPrsnInd | 0 | 1 |
| IRS990/AuditCommitteeInd | 0 | 1 |
| IRS990/BooksInCareOfDetail/BusinessName/BusinessNameLine1Txt | 0 | THE ORGANIZATION |
| IRS990/BooksInCareOfDetail/PhoneNum | 0 | 7033248582 |
| IRS990/BooksInCareOfDetail/USAddress/AddressLine1Txt | 0 | 12055 GOVERNMENT CENTER PARKWAY |
| IRS990/BooksInCareOfDetail/USAddress/CityNm | 0 | FAIRFAX |
| IRS990/BooksInCareOfDetail/USAddress/StateAbbreviationCd | 0 | VA |
| IRS990/BooksInCareOfDetail/USAddress/ZIPCd | 0 | 22035 |
| IRS990/BusinessRlnWith35CtrlEntInd | 0 | 0 |
| IRS990/BusinessRlnWithFamMemInd | 0 | 0 |
| IRS990/BusinessRlnWithOrgMemInd | 0 | 0 |
| IRS990/CashNonInterestBearingGrp/BOYAmt | 0 | 905273 |
| IRS990/CashNonInterestBearingGrp/EOYAmt | 0 | 798165 |
| IRS990/ChangeToOrgDocumentsInd | 0 | 0 |
| IRS990/CntrctRcvdGreaterThan100KCnt | 0 | 0 |
| IRS990/CollectionsOfArtInd | 0 | 0 |
| IRS990/CompensationFromOtherSrcsInd | 0 | 0 |
| IRS990/CompensationProcessCEOInd | 0 | 1 |
| IRS990/CompensationProcessOtherInd | 0 | 0 |
| IRS990/ConferencesMeetingsGrp/ManagementAndGeneralAmt | 0 | 8375 |
| IRS990/ConferencesMeetingsGrp/TotalAmt | 0 | 8375 |
| IRS990/ConflictOfInterestPolicyInd | 0 | 1 |
| IRS990/ConservationEasementsInd | 0 | 0 |
| IRS990/ConsolidatedAuditFinclStmtInd | 0 | 0 |
| IRS990/CreditCounselingInd | 0 | 0 |
| IRS990/CYBenefitsPaidToMembersAmt | 0 | 0 |
| IRS990/CYContributionsGrantsAmt | 0 | 4687643 |
| IRS990/CYGrantsAndSimilarPaidAmt | 0 | 949371 |
| IRS990/CYInvestmentIncomeAmt | 0 | 44058 |
| IRS990/CYOtherExpensesAmt | 0 | 101735 |
| IRS990/CYOtherRevenueAmt | 0 | 0 |
| IRS990/CYProgramServiceRevenueAmt | 0 | 0 |
| IRS990/CYRevenuesLessExpensesAmt | 0 | 3680595 |
| IRS990/CYSalariesCompEmpBnftPaidAmt | 0 | 0 |
| IRS990/CYTotalExpensesAmt | 0 | 1051106 |
| IRS990/CYTotalFundraisingExpenseAmt | 0 | 24621 |
| IRS990/CYTotalProfFndrsngExpnsAmt | 0 | 0 |
| IRS990/CYTotalRevenueAmt | 0 | 4731701 |
| IRS990/DecisionsSubjectToApprovaInd | 0 | 0 |
| IRS990/DeductibleArtContributionInd | 0 | 0 |
| IRS990/DeductibleNonCashContriInd | 0 | 0 |
| IRS990/DelegationOfMgmtDutiesInd | 0 | 0 |
| IRS990/Desc | 0 | SUPPORTING THE PROGRAMS, ACTIVITIES AND FACILITIES OF THE FAIRFAX COUNTY PARK AUTHORITY. |
| IRS990/DescribedInSection501c3Ind | 0 | 1 |
| IRS990/DisregardedEntityInd | 0 | 0 |
| IRS990/DocumentRetentionPolicyInd | 0 | 1 |
| IRS990/DonorAdvisedFundInd | 0 | 0 |
| IRS990/DonorRestrictionNetAssetsGrp/BOYAmt | 0 | 1308807 |
| IRS990/DonorRestrictionNetAssetsGrp/EOYAmt | 0 | 5039789 |
| IRS990/DonorRstrOrQuasiEndowmentsInd | 0 | 1 |
| IRS990/ElectionOfBoardMembersInd | 0 | 0 |
| IRS990/EmployeeCnt | 0 | 0 |
| IRS990/EngagedInExcessBenefitTransInd | 0 | 0 |
| IRS990/ExpenseAmt | 0 | 949371 |
| IRS990/FamilyOrBusinessRlnInd | 0 | 0 |
| IRS990/FederalGrantAuditRequiredInd | 0 | 0 |
| IRS990/FederatedCampaignsAmt | 0 | 13539 |
| IRS990/FeesForServicesAccountingGrp/ManagementAndGeneralAmt | 0 | 11434 |
| IRS990/FeesForServicesAccountingGrp/TotalAmt | 0 | 11434 |
| IRS990/FeesForSrvcInvstMgmntFeesGrp/ManagementAndGeneralAmt | 0 | 14909 |
| IRS990/FeesForSrvcInvstMgmntFeesGrp/TotalAmt | 0 | 14909 |
| IRS990/ForeignActivitiesInd | 0 | 0 |
| IRS990/ForeignFinancialAccountInd | 0 | 0 |
| IRS990/ForeignOfficeInd | 0 | 0 |
| IRS990/Form8282PropertyDisposedOfInd | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 0 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 1 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 2 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 3 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 4 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 5 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 6 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 7 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 8 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 9 | 40.00 |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 0 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 1 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 2 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 3 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 4 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 5 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 6 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 7 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 8 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 0 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 1 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 2 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 3 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 4 | X |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 1 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 2 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 3 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 4 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 5 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 6 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 7 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 8 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 9 | 11818 |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 0 | HARRISON A GLASGOW |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 1 | MICHAEL GAILLIOT |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 2 | LAURA EAKIN ERLACHER |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 3 | KEVIN TA |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 4 | ROBIN WALKER |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 5 | THOMAS CHENNIKARA |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 6 | RICH HARPE |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 7 | ANITA HERRERA |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 8 | GARY W KIRKBRIDE |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 9 | ROBERTA LONGWORTH |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 1 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 2 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 3 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 4 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 5 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 6 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 7 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 8 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 9 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 1 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 2 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 3 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 4 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 5 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 6 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 7 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 8 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 9 | 159209 |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 0 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 1 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 2 | VICE CHAIR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 3 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 4 | SECRETARY |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 5 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 6 | TREASURER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 7 | CHAIR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 8 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 9 | EXECUTIVE DIR. |
| IRS990/Form990ProvidedToGvrnBodyInd | 0 | 1 |
| IRS990/FormationYr | 0 | 2001 |
| IRS990/FormerOfcrEmployeesListedInd | 0 | 0 |
| IRS990/FSAuditedBasisGrp/ConsolAndSepBasisFinclStmtInd | 0 | X |
| IRS990/FSAuditedInd | 0 | 1 |
| IRS990/FundraisingActivitiesInd | 0 | 0 |
| IRS990/GamingActivitiesInd | 0 | 0 |
| IRS990/GoverningBodyVotingMembersCnt | 0 | 9 |
| IRS990/GrantAmt | 0 | 949371 |
| IRS990/GrantsToDomesticOrgsGrp/ProgramServicesAmt | 0 | 949371 |
| IRS990/GrantsToDomesticOrgsGrp/TotalAmt | 0 | 949371 |
| IRS990/GrantsToIndividualsInd | 0 | 0 |
| IRS990/GrantsToOrganizationsInd | 0 | 1 |
| IRS990/GrantToRelatedPersonInd | 0 | 0 |
| IRS990/GrossReceiptsAmt | 0 | 4731701 |
| IRS990/GroupReturnForAffiliatesInd | 0 | 0 |
| IRS990/IncludeFIN48FootnoteInd | 0 | 1 |
| IRS990/IndependentAuditFinclStmtInd | 0 | 1 |
| IRS990/IndependentVotingMemberCnt | 0 | 9 |
| IRS990/IndivRcvdGreaterThan100KCnt | 0 | 0 |
| IRS990/IndoorTanningServicesInd | 0 | 0 |
| IRS990/InfoInScheduleOPartVIInd | 0 | X |
| IRS990/InfoInScheduleOPartXIIInd | 0 | X |
| IRS990/InformationTechnologyGrp/ManagementAndGeneralAmt | 0 | 6670 |
| IRS990/InformationTechnologyGrp/TotalAmt | 0 | 6670 |
| IRS990/InsuranceGrp/ManagementAndGeneralAmt | 0 | 868 |
| IRS990/InsuranceGrp/TotalAmt | 0 | 868 |
| IRS990/InvestmentIncomeGrp/ExclusionAmt | 0 | 44058 |
| IRS990/InvestmentIncomeGrp/TotalRevenueColumnAmt | 0 | 44058 |
| IRS990/InvestmentInJointVentureInd | 0 | 0 |
| IRS990/InvestmentsPubTradedSecGrp/BOYAmt | 0 | 468670 |
| IRS990/InvestmentsPubTradedSecGrp/EOYAmt | 0 | 4213651 |
| IRS990/IRPDocumentCnt | 0 | 0 |
| IRS990/IRPDocumentW2GCnt | 0 | 0 |
| IRS990/LegalDomicileStateCd | 0 | VA |
| IRS990/LoanOutstandingInd | 0 | 0 |
| IRS990/LobbyingActivitiesInd | 0 | 0 |
| IRS990/LocalChaptersInd | 0 | 0 |
| IRS990/MaterialDiversionOrMisuseInd | 0 | 0 |
| IRS990/MembersOrStockholdersInd | 0 | 0 |
| IRS990/MethodOfAccountingAccrualInd | 0 | X |
| IRS990/MinutesOfCommitteesInd | 0 | 1 |
| IRS990/MinutesOfGoverningBodyInd | 0 | 1 |
| IRS990/MissionDesc | 0 | THE FAIRFAX COUNTY PARK FOUNDATION SUPPORTS THE FAIRFAX COUNTY PARK AUTHORITY BY RAISING PRIVATE FUNDS, OBTAINING GRANTS AND CREATING PARTNERSHIPS THAT SUPPLEMENT TAX DOLLARS TO MEET OUR COMMUNITY'S NEEDS FOR PARK LAND, FACILITIES AND SERVICES. |
| IRS990/MoreThan5000KToIndividualsInd | 0 | 0 |
| IRS990/MoreThan5000KToOrgInd | 0 | 0 |
| IRS990/NetAssetsOrFundBalancesBOYAmt | 0 | 1507428 |
| IRS990/NetAssetsOrFundBalancesEOYAmt | 0 | 5376478 |
| IRS990/NetUnrelatedBusTxblIncmAmt | 0 | 0 |
| IRS990/NetUnrlzdGainsLossesInvstAmt | 0 | 188455 |
| IRS990/NoDonorRestrictionNetAssetsGrp/BOYAmt | 0 | 198621 |
| IRS990/NoDonorRestrictionNetAssetsGrp/EOYAmt | 0 | 336689 |
| IRS990/NondeductibleContributionsInd | 0 | 0 |
| IRS990/OfficeExpensesGrp/ManagementAndGeneralAmt | 0 | 3461 |
| IRS990/OfficeExpensesGrp/TotalAmt | 0 | 3461 |
| IRS990/OfficerMailingAddressInd | 0 | 0 |
| IRS990/OperateHospitalInd | 0 | 0 |
| IRS990/Organization501c3Ind | 0 | X |
| IRS990/OrganizationFollowsFASB117Ind | 0 | X |
| IRS990/OtherChangesInNetAssetsAmt | 0 | 0 |
| IRS990/OtherExpensesGrp/Desc | 0 | Direct mailing |
| IRS990/OtherExpensesGrp/Desc | 1 | Miscellaneous |
| IRS990/OtherExpensesGrp/Desc | 2 | Website |
| IRS990/OtherExpensesGrp/Desc | 3 | Printing and reproducti |
| IRS990/OtherExpensesGrp/FundraisingAmt | 0 | 21395 |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 0 | 14370 |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 1 | 9696 |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 2 | 7331 |
| IRS990/OtherExpensesGrp/TotalAmt | 0 | 21395 |
| IRS990/OtherExpensesGrp/TotalAmt | 1 | 14370 |
| IRS990/OtherExpensesGrp/TotalAmt | 2 | 9696 |
| IRS990/OtherExpensesGrp/TotalAmt | 3 | 7331 |
| IRS990/OtherWebsiteInd | 0 | X |
| IRS990/OwnWebsiteInd | 0 | X |
| IRS990/PartialLiquidationInd | 0 | 0 |
| IRS990/PayPremiumsPrsnlBnftCntrctInd | 0 | 0 |
| IRS990/PledgesAndGrantsReceivableGrp/BOYAmt | 0 | 133485 |
| IRS990/PledgesAndGrantsReceivableGrp/EOYAmt | 0 | 364662 |
| IRS990/PoliticalCampaignActyInd | 0 | 0 |
| IRS990/PrincipalOfficerNm | 0 | ROBERTA A LONGWORTH |
| IRS990/ProfessionalFundraisingInd | 0 | 0 |
| IRS990/ProhibitedTaxShelterTransInd | 0 | 0 |
| IRS990/PYBenefitsPaidToMembersAmt | 0 | 0 |
| IRS990/PYContributionsGrantsAmt | 0 | 1847653 |
| IRS990/PYExcessBenefitTransInd | 0 | 0 |
| IRS990/PYGrantsAndSimilarPaidAmt | 0 | 2099018 |
| IRS990/PYInvestmentIncomeAmt | 0 | 166 |
| IRS990/PYOtherExpensesAmt | 0 | 143120 |
| IRS990/PYOtherRevenueAmt | 0 | 0 |
| IRS990/PYProgramServiceRevenueAmt | 0 | 0 |
| IRS990/PYRevenuesLessExpensesAmt | 0 | -394319 |
| IRS990/PYSalariesCompEmpBnftPaidAmt | 0 | 0 |
| IRS990/PYTotalExpensesAmt | 0 | 2242138 |
| IRS990/PYTotalProfFndrsngExpnsAmt | 0 | 0 |
| IRS990/PYTotalRevenueAmt | 0 | 1847819 |
| IRS990/QuidProQuoContributionsInd | 0 | 0 |
| IRS990/RcvFndsToPayPrsnlBnftCntrctInd | 0 | 0 |
| IRS990/ReconcilationRevenueExpnssAmt | 0 | 3680595 |
| IRS990/RegularMonitoringEnfrcInd | 0 | 0 |
| IRS990/RelatedEntityInd | 0 | 1 |
| IRS990/RelatedOrganizationCtrlEntInd | 0 | 0 |
| IRS990/ReportInvestmentsOtherSecInd | 0 | 0 |
| IRS990/ReportLandBuildingEquipmentInd | 0 | 0 |
| IRS990/ReportOtherAssetsInd | 0 | 0 |
| IRS990/ReportOtherLiabilitiesInd | 0 | 0 |
| IRS990/ReportProgramRelatedInvstInd | 0 | 0 |
| IRS990/RevenueAmt | 0 | 0 |
| IRS990ScheduleA/Form990SchASupportingOrgGrp/Contribution35ControlledInd | 0 | 0 |
| IRS990ScheduleA/Form990SchASupportingOrgGrp/ContributionControllerInd | 0 | 0 |
| IRS990ScheduleA/Form990SchASupportingOrgGrp/ContributionFamilyInd | 0 | 0 |
| IRS990ScheduleA/Form990SchASupportingOrgGrp/ControlledDisqualifiedPrsnInd | 0 | 0 |
| IRS990ScheduleA/Form990SchASupportingOrgGrp/DisqualifiedPrsnControllIntInd | 0 | 0 |
| IRS990ScheduleA/Form990SchASupportingOrgGrp/DisqualifiedPrsnOwnrIntInd | 0 | 0 |
| IRS990ScheduleA/Form990SchASupportingOrgGrp/ExcessBusinessHoldingsRulesInd | 0 | 0 |
| IRS990ScheduleA/Form990SchASupportingOrgGrp/ListedByNameGoverningDocInd | 0 | 1 |
| IRS990ScheduleA/Form990SchASupportingOrgGrp/LoanDisqualifiedPersonInd | 0 | 0 |
| IRS990ScheduleA/Form990SchASupportingOrgGrp/OrganizationChangeSuprtOrgInd | 0 | 0 |
| IRS990ScheduleA/Form990SchASupportingOrgGrp/PaymentSubstantialContribtrInd | 0 | 0 |
| IRS990ScheduleA/Form990SchASupportingOrgGrp/SupportedOrgNotOrganizedUSInd | 0 | 0 |
| IRS990ScheduleA/Form990SchASupportingOrgGrp/SupportedOrgSectionC456Ind | 0 | 0 |
| IRS990ScheduleA/Form990SchASupportingOrgGrp/SupportNonSupportedOrgInd | 0 | 0 |
| IRS990ScheduleA/Form990SchASupportingOrgGrp/SuprtOrgNoIRSDeterminationInd | 0 | 0 |
| IRS990ScheduleA/Form990SchAType1SuprtOrgGrp/OperateBenefitNonSuprtOrgInd | 0 | 0 |
| IRS990ScheduleA/Form990SchAType1SuprtOrgGrp/PowerAppointMajorityDirTrstInd | 0 | 1 |
| IRS990ScheduleA/OtherSupportSumAmt | 0 | 0 |
| IRS990ScheduleA/SupportedOrganizationsCnt | 0 | 1 |
| IRS990ScheduleA/SupportedOrganizationsTotalCnt | 0 | 1 |
| IRS990ScheduleA/SupportedOrgInformationGrp/EIN | 0 | 540787833 |
| IRS990ScheduleA/SupportedOrgInformationGrp/GoverningDocumentListedInd | 0 | 1 |
| IRS990ScheduleA/SupportedOrgInformationGrp/OrganizationTypeCd | 0 | 6 |
| IRS990ScheduleA/SupportedOrgInformationGrp/OtherSupportAmt | 0 | 0 |
| IRS990ScheduleA/SupportedOrgInformationGrp/SupportAmt | 0 | 0 |
| IRS990ScheduleA/SupportedOrgInformationGrp/SupportedOrganizationName/BusinessNameLine1Txt | 0 | FAIRFAX COUNTY PARK AUTHORITY |
| IRS990ScheduleA/SupportingOrganization509a3Ind | 0 | X |
| IRS990ScheduleA/SupportingOrgType1Ind | 0 | X |
| IRS990ScheduleA/SupportSumAmt | 0 | 0 |
| IRS990ScheduleB/ContributorInformationGrp/ContributorBusinessName/BusinessNameLine1 | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorNum | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/AddressLine1 | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/AddressLine2 | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/City | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/State | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/ZIPCode | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/TotalContributionsAmt | 0 | RESTRICTED |
| IRS990/ScheduleBRequiredInd | 0 | 1 |
| IRS990ScheduleD/CYEndwmtFundGrp/BeginningYearBalanceAmt | 0 | 606399 |
| IRS990ScheduleD/CYEndwmtFundGrp/ContributionsAmt | 0 | 3465415 |
| IRS990ScheduleD/CYEndwmtFundGrp/EndYearBalanceAmt | 0 | 4289418 |
| IRS990ScheduleD/CYEndwmtFundGrp/InvestmentEarningsOrLossesAmt | 0 | 217604 |
| IRS990ScheduleD/CYMinus1YrEndwmtFundGrp/BeginningYearBalanceAmt | 0 | 559658 |
| IRS990ScheduleD/CYMinus1YrEndwmtFundGrp/EndYearBalanceAmt | 0 | 606399 |
| IRS990ScheduleD/CYMinus1YrEndwmtFundGrp/InvestmentEarningsOrLossesAmt | 0 | 46741 |
| IRS990ScheduleD/CYMinus2YrEndwmtFundGrp/BeginningYearBalanceAmt | 0 | 540798 |
| IRS990ScheduleD/CYMinus2YrEndwmtFundGrp/ContributionsAmt | 0 | 3153 |
| IRS990ScheduleD/CYMinus2YrEndwmtFundGrp/EndYearBalanceAmt | 0 | 559658 |
| IRS990ScheduleD/CYMinus2YrEndwmtFundGrp/InvestmentEarningsOrLossesAmt | 0 | 15707 |
| IRS990ScheduleD/CYMinus3YrEndwmtFundGrp/BeginningYearBalanceAmt | 0 | 539854 |
| IRS990ScheduleD/CYMinus3YrEndwmtFundGrp/ContributionsAmt | 0 | 551 |
| IRS990ScheduleD/CYMinus3YrEndwmtFundGrp/EndYearBalanceAmt | 0 | 540798 |
| IRS990ScheduleD/CYMinus3YrEndwmtFundGrp/InvestmentEarningsOrLossesAmt | 0 | 393 |
| IRS990ScheduleD/CYMinus4YrEndwmtFundGrp/BeginningYearBalanceAmt | 0 | 464368 |
| IRS990ScheduleD/CYMinus4YrEndwmtFundGrp/ContributionsAmt | 0 | 73937 |
| IRS990ScheduleD/CYMinus4YrEndwmtFundGrp/EndYearBalanceAmt | 0 | 539854 |
| IRS990ScheduleD/CYMinus4YrEndwmtFundGrp/InvestmentEarningsOrLossesAmt | 0 | 1549 |
| IRS990ScheduleD/DonatedServicesAndUseFcltsAmt | 0 | 564143 |
| IRS990ScheduleD/DonatedServicesUseFcltsAmt | 0 | 564143 |
| IRS990ScheduleD/EndowmentsHeldRelatedOrgInd | 0 | 0 |
| IRS990ScheduleD/EndowmentsHeldUnrelatedOrgInd | 0 | 0 |
| IRS990ScheduleD/ExpensesNotReportedAmt | 0 | 564143 |
| IRS990ScheduleD/ExpensesNotRptFinclStmtAmt | 0 | 14909 |
| IRS990ScheduleD/ExpensesSubtotalAmt | 0 | 1036197 |
| IRS990ScheduleD/FootnoteTextInd | 0 | X |
| IRS990ScheduleD/InvestmentExpensesNotIncld2Amt | 0 | 14909 |
| IRS990ScheduleD/InvestmentExpensesNotIncldAmt | 0 | 14909 |
| IRS990ScheduleD/NetUnrealizedGainsInvstAmt | 0 | 188455 |
| IRS990ScheduleD/RevenueNotReportedAmt | 0 | 752598 |
| IRS990ScheduleD/RevenueNotReportedFinclStmtAmt | 0 | 14909 |
| IRS990ScheduleD/RevenueSubtotalAmt | 0 | 4716792 |
| IRS990ScheduleD/SupplementalInformationDetail/ExplanationTxt | 0 | UNCERTAIN TAX POSITIONS - AS OF JUNE 30, 2025, THE FOUNDATION HAD NO UNCERTAIN TAX POSITIONS THAT QUALIFY FOR EITHER RECOGNITION OR DISCLOSURE IN THE FINANCIAL STATEMENTS. THE TAX YEARS SUBJECT TO EXAMINATION BY THE TAXING AUTHORITIES ARE THE YEARS ENDED JUNE 30, 2021 THROUGH 2024 |
| IRS990ScheduleD/SupplementalInformationDetail/FormAndLineReferenceDesc | 0 | Part X, Line 2: |
| IRS990ScheduleD/TotalBookValueLandBuildingsAmt | 0 | 0 |
| IRS990ScheduleD/TotalExpensesPerForm990Amt | 0 | 1051106 |
| IRS990ScheduleD/TotalRevenuePerForm990Amt | 0 | 4731701 |
| IRS990ScheduleD/TotalRevEtcAuditedFinclStmtAmt | 0 | 5469390 |
| IRS990ScheduleD/TotExpnsEtcAuditedFinclStmtAmt | 0 | 1600340 |
| IRS990ScheduleI/GrantRecordsMaintainedInd | 0 | 1 |
| IRS990ScheduleI/RecipientTable/CashGrantAmt | 0 | 949371 |
| IRS990ScheduleI/RecipientTable/NonCashAssistanceAmt | 0 | 0 |
| IRS990ScheduleI/RecipientTable/PurposeOfGrantTxt | 0 | TO SUPPORT VARIOUS PROJECTS MAINTAINED BY THE PARK AUTHORITY |
| IRS990ScheduleI/RecipientTable/RecipientBusinessName/BusinessNameLine1Txt | 0 | FAIRFAX COUNTY PARK AUTHORITY |
| IRS990ScheduleI/RecipientTable/RecipientEIN | 0 | 540787833 |
| IRS990ScheduleI/RecipientTable/USAddress/AddressLine1Txt | 0 | 12055 GOVT CNTR PRKWY STE 927 |
| IRS990ScheduleI/RecipientTable/USAddress/CityNm | 0 | FAIRFAX |
| IRS990ScheduleI/RecipientTable/USAddress/StateAbbreviationCd | 0 | VA |
| IRS990ScheduleI/RecipientTable/USAddress/ZIPCd | 0 | 22035 |
| IRS990ScheduleI/SupplementalInformationDetail/ExplanationTxt | 0 | WHEN GRANT FUNDS ARE PAID TO THE FAIRFAX COUNTY PARK AUTHORITY, THE FAIRFAX COUNTY PARK FOUNDATION REQUIRES THE PARK AUTHORITY TO SIGN A STATEMENT THAT THE FUNDS RECEIVED WILL BE SPENT ON THE PROJECTS IDENTIFIED IN THE SIGNED STATEMENT. THE STATEMENTS LISTS EACH PROJECT AND THE AMOUNT ASSOCIATED WITH EACH PROJECT. |
| IRS990ScheduleI/SupplementalInformationDetail/FormAndLineReferenceDesc | 0 | Part I, Line 2: |
| IRS990ScheduleI/SupplementalInformationDetail/FormAndLineReferenceDesc | 1 | WHEN GRANT FUNDS ARE PAID TO THE FAIRFAX COUNTY PARK AUTHORITY, THE FAIRFAX |
| IRS990ScheduleI/Total501c3OrgCnt | 0 | 1 |
| IRS990ScheduleI/TotalOtherOrgCnt | 0 | 0 |
| IRS990ScheduleJ/AnyNonFixedPaymentsInd | 0 | 0 |
| IRS990ScheduleJ/CompBasedOnRevenueOfFlngOrgInd | 0 | 0 |
| IRS990ScheduleJ/CompBsdNetEarnsFlngOrgInd | 0 | 0 |
| IRS990ScheduleJ/CompBsdNetEarnsRltdOrgsInd | 0 | 0 |
| IRS990ScheduleJ/CompBsdOnRevRelatedOrgsInd | 0 | 0 |
| IRS990ScheduleJ/EquityBasedCompArrngmInd | 0 | 0 |
| IRS990ScheduleJ/InitialContractExceptionInd | 0 | 0 |
| IRS990/ScheduleJRequiredInd | 0 | 1 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/BaseCompensationFilingOrgAmt | 0 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/BonusFilingOrganizationAmount | 0 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/BonusRelatedOrganizationsAmt | 0 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/CompensationBasedOnRltdOrgsAmt | 0 | 159209 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/CompReportPrior990FilingOrgAmt | 0 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/CompReportPrior990RltdOrgsAmt | 0 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/DeferredCompensationFlngOrgAmt | 0 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/DeferredCompRltdOrgsAmt | 0 | 11818 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/NontaxableBenefitsFilingOrgAmt | 0 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/NontaxableBenefitsRltdOrgsAmt | 0 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/OtherCompensationFilingOrgAmt | 0 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/OtherCompensationRltdOrgsAmt | 0 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/PersonNm | 0 | ROBERTA LONGWORTH |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/TitleTxt | 0 | EXECUTIVE DIR. |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/TotalCompensationFilingOrgAmt | 0 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/TotalCompensationRltdOrgsAmt | 0 | 171027 |
| IRS990ScheduleJ/SeverancePaymentInd | 0 | 0 |
| IRS990ScheduleJ/SupplementalNonqualRtrPlanInd | 0 | 0 |
| IRS990/ScheduleORequiredInd | 0 | 1 |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 0 | A DRAFT OF THE FORM 990 WAS GIVEN TO THE EXECUTIVE DIRECTOR AND THE MEMBERS OF THE AUDIT/FINANCE COMMITTEE OF THE BOARD OF DIRECTORS FOR REVIEW. ADDITIONS AND CORRECTIONS WERE MADE AS NECESSARY. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 1 | THE EXECUTIVE DIRECTOR AND FOUNDATION EMPLOYEES ARE FAIRFAX COUNTY GOVERNMENT EMPLOYEES. THEIR COMPENSATION AND OTHER TERMS OF EMPLOYMENT ARE DETERMINED BY THE FAIRFAX COUNTY MERIT SYSTEM ORDINANCE AND PERSONNEL REGULATIONS. THE ORDINANCE AND REGULATIONS ARE ADMINISTERED INDEPENDENTLY BY THE FAIRFAX COUNTY HUMAN RESOURCES DEPARTMENT WHICH SETS COMPENSATION RANGES BASED ON COMPARABILITY STUDIES AND REGULATES AND OVERSEES ALL COMPENSATION ADJUSTMENTS. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 2 | THE FAIRFAX COUNTY PARK FOUNDATION'S FORM 990, FINANCIAL STATEMENTS AND ANNUAL REPORT ARE AVAILABLE ON ITS WEBSITE AND THE FOUNDATION'S FORM 990 IS AVAILABLE ON THE GUIDESTAR WEBSITE. THE GOVERNING DOCUMENTS ARE AVAILABLE UPON REQUEST. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 3 | NO CHANGE HAS BEEN MADE TO THE OVERSIGHT PROCESS |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 0 | Form 990, Part VI, Section B, line 11b |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 1 | Form 990, Part VI, Section B, line 15a |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 2 | Form 990, Part VI, Section C, line 19 |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 3 | Form 990, Part XII, Line 2c: |
| IRS990ScheduleR/AssetExchangeInd | 0 | 0 |
| IRS990ScheduleR/AssetPurchaseFromOtherOrgInd | 0 | 0 |
| IRS990ScheduleR/AssetSaleToOtherOrgInd | 0 | 0 |
| IRS990ScheduleR/DivRelatedOrganizationInd | 0 | 0 |
| IRS990ScheduleR/GiftGrntCapContriFromOthOrgInd | 0 | 0 |
| IRS990ScheduleR/GiftGrntOrCapContriToOthOrgInd | 0 | 1 |
| IRS990ScheduleR/IdRelatedTaxExemptOrgGrp/ControlledOrganizationInd | 0 | 0 |
| IRS990ScheduleR/IdRelatedTaxExemptOrgGrp/DisregardedEntityName/BusinessNameLine1Txt | 0 | FAIRFAX COUNTY PARK AUTHORITY |
| IRS990ScheduleR/IdRelatedTaxExemptOrgGrp/EIN | 0 | 540787833 |
| IRS990ScheduleR/IdRelatedTaxExemptOrgGrp/LegalDomicileStateCd | 0 | VA |
| IRS990ScheduleR/IdRelatedTaxExemptOrgGrp/PrimaryActivitiesTxt | 0 | MANAGE PARKS AND OPEN SPACE IN FAIRFAX COUNTY |
| IRS990ScheduleR/IdRelatedTaxExemptOrgGrp/USAddress/AddressLine1Txt | 0 | 12055 GOVT CNTR PRKWY STE 927 |
| IRS990ScheduleR/IdRelatedTaxExemptOrgGrp/USAddress/CityNm | 0 | FAIRFAX |
| IRS990ScheduleR/IdRelatedTaxExemptOrgGrp/USAddress/StateAbbreviationCd | 0 | VA |
| IRS990ScheduleR/IdRelatedTaxExemptOrgGrp/USAddress/ZIPCd | 0 | 22035 |
| IRS990ScheduleR/LoansOrGuaranteesFromOthOrgInd | 0 | 0 |
| IRS990ScheduleR/LoansOrGuaranteesToOtherOrgInd | 0 | 0 |
| IRS990ScheduleR/PaidEmployeesSharingInd | 0 | 0 |
| IRS990ScheduleR/PerformOfServicesByOtherOrgInd | 0 | 1 |
| IRS990ScheduleR/PerformOfServicesForOthOrgInd | 0 | 0 |
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