Liabilities / Assets
22nd percentile
Higher debt load relative to assets than 22% of similar nonprofits.
EIN 94-3191775 • 501(c)3 • San Mateo, CA
Profile
The mission of the san mateo public library foundation is to seek private financial support from the community to ensure high quality library services will always be available now and for future generations
Precomputed percentiles relative to similar nonprofits. These scores are descriptive rather than judgmental.
Liabilities / Assets
22nd percentile
Higher debt load relative to assets than 22% of similar nonprofits.
Liabilities / Revenue
25th percentile
Higher debt load relative to revenue than 25% of similar nonprofits.
Net Margin
42nd percentile
Higher net margin than 42% of similar nonprofits.
Top Officer Pay
Score unavailable
No filing with officer rows is available for this organization yet.
Asset Growth
68th percentile
Faster asset growth than 68% of similar nonprofits.
Revenue Growth
55th percentile
Faster revenue growth than 55% of similar nonprofits.
Assets
Up$1,703,318
Up $180,401 (+12%) from 2024
Liabilities
Up$1,650
Up $696 (+73%) from 2024
Net Assets
Up$1,701,668
Up $179,705 (+12%) from 2024
Revenue
Up$371,553
Up $33,621 (+9.9%) from 2024
Expenses
Up$367,798
Up $61,620 (+20%) from 2024
Net Income
Down$3,755
Down $27,999 (-88%) from 2024
Most recent year
2025 • Form 990XML pending. An XML filing is linked for this year, but detailed extraction is still pending.
The latest 2025 filing currently has linked XML that has not been fully parsed yet. Showing the latest detailed filing from 2023 below.
The mission of the san mateo public library foundation is to seek private financial support from the community to ensure high quality library services will always be available now and for future generations
Our mission is to seek private financial support from the community to ensure that high-quality Library programs and services will always be available.
| Line | Beginning | End | Change |
|---|---|---|---|
| Assets | |||
| Investments Other Securities | $937,999 | $1,102,542 | ▲ $164,543 |
| Cash and Non-Interest-Bearing Accounts | $110,603 | $102,869 | ▼ $7,734 |
| Savings and Temporary Cash Investments | $70,953 | $70,981 | ▲ $28 |
| Pledges and Grants Receivable | $250 | $7,500 | ▲ $7,250 |
| Accounts Receivable | - | $2,289 | - |
| Other Notes and Loans Receivable, Net | - | $0 | - |
| Receivable From Disqualified Prsn | - | $0 | - |
| Receivables From Officers Etc | - | $0 | - |
| Investments Program Related | - | $0 | - |
| Investments in Publicly Traded Securities | - | $0 | - |
| Land, Buildings, and Equipment, Net | - | $0 | - |
| Intangible Assets | - | $0 | - |
| Inventories for Sale or Use | - | $0 | - |
| Prepaid Expenses and Deferred Charges | - | $0 | - |
| Total Assets | $1,119,805 | $1,286,181 | ▲ $166,376 |
| Other Assets Total | - | $0 | - |
| Liabilities | |||
| Accounts Payable and Accrued Expenses | $-10,235 | $-7,319 | ▲ $2,916 |
| Total Liabilities | $-10,235 | $-7,319 | ▲ $2,916 |
| Net Assets / Fund Balance | |||
| Net Assets Without Donor Restrictions | $1,130,040 | $1,293,500 | ▲ $163,460 |
| Total Net Assets Fund Balance | $1,130,040 | $1,293,500 | ▲ $163,460 |
| Total Liabilities and Net Assets / Fund Balance | $1,119,805 | $1,286,181 | ▲ $166,376 |
| Asset | Book Value | Depreciation | Basis |
|---|---|---|---|
| Equipment | - | $5,900 | $5,900 |
| Name | Title |
|---|---|
| Alexandra Gillen | Co-President |
| Jeanne Back | Co-President |
| Ann Girard | Board Member |
| Armaity Patel | Board Member |
| Chris Blom | Board Member |
| Diane Ervin | Board Member |
| Donna Divodi | Board Member |
| Erin Sinclair | Board Member |
| Marie Chuang | Board Member |
| Renee Thierry-Jones | Board Member |
| Suzanne Simms | Board Member |
| Martha Nora | Secretary |
| Sunil Pandya | Treasurer |
| Line Item | Amount |
|---|---|
| Grants and Similar Amounts Paid | $135,000 |
| Salaries, Compensation, and Employee Benefits | $98,259 |
| Other Expenses | $30,580 |
| Total Fundraising Expense | $25,221 |
| Professional Fundraising Fees | $0 |
| Line Item | Program | Management | Fundraising | Total |
|---|---|---|---|---|
| Grants to Domestic Orgs | $135,000 | - | - | $135,000 |
| Other Salaries and Wages | $45,299 | $27,179 | $18,120 | $90,598 |
| Payroll Taxes | $3,831 | $2,298 | $1,532 | $7,661 |
| Fees for Services Accounting | $2,081 | $1,248 | $832 | $4,161 |
| Insurance | $1,789 | $1,073 | $715 | $3,577 |
| Information Technology | $1,091 | $654 | $436 | $2,181 |
| Office Expenses | - | $1,649 | - | $1,649 |
| All Other Expenses | $507 | $550 | $203 | $1,260 |
| Other Expenses | $839 | $286 | $191 | $839 |
| Total Functional Expenses | $198,894 | $39,724 | $25,221 | $263,839 |
| Recipient | Location | Category | Purpose | Amount |
|---|---|---|---|---|
| San Mateo Public Library | San Mateo, CA | - | General Fund | $135,000 |
| Line Item | Amount |
|---|---|
| Fundraising Direct Expenses | $44,685 |
| Fundraising Gross Income | $38,632 |
| Professional Fundraising Fees | $0 |
| Event | Gross Receipts | Gross Revenue | Direct Expenses | Net Income |
|---|---|---|---|---|
| Book Sales | $37,907 | $37,907 | $6,283 | $31,624 |
| Spring Appeal | $69,449 | $725 | $3,038 | $-2,313 |
| Total Events | $107,356 | $38,632 | $44,685 | $-6,053 |
| Line Item | Beginning | End | Change |
|---|---|---|---|
| Receivables from Disqualified Persons | - | $0 | - |
| Receivables from Officers, Directors, Trustees, and Key Employees | - | $0 | - |
“Form 990 is prepared by an outside tax professional. The form is then reviewed by the organization's management. After a full review, the final version of the tax return is provided to all members of the organization's voting body. A representative of management authorizes the final form 990 which is then e-filed with the internal revenue service.”
“Members of the Board of Directors review all potential conflicts of interest periodically. Top management and all Board members are required to disclose potential conflicts and any related party affiliations. The organization seeks full transparency on all relationships. Any potential conflicts (in fact or appearance) are discussed openly and resolved in accordance with the organization's policies and procedures.”
“Members of the board of directors review the compensation of all high-level personnel periodically in accordance with IRS rules and regulations. Efforts are made to secure compensation data from industry sources in order to determine competitiveness and appropriateness of salaries. Every effort is made to ensure that the process is thorough and transparent in accordance with IRS guidelines and the organization's policies and procedures.”
“All compensation is determined by the Board of Directors.”
“Tax returns are available from the organization's office in San Mateo, California.”
“All of the organization's governing documents, financial statements, and other legal filings are maintained in a secure environment and held available for inspection by tax authorities and the general public. Tax returns are posted annually to our website and to www.guidestar.org (where they are available for viewing as electronic copies) and are also available by request from the organization's office.”
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 | false |
| IRS990/AccountsPayableAccrExpnssGrp/BOYAmt | 0 | -10235 |
| IRS990/AccountsPayableAccrExpnssGrp/EOYAmt | 0 | -7319 |
| IRS990/AccountsReceivableGrp/EOYAmt | 0 | 2289 |
| IRS990/ActivitiesConductedPrtshpInd | 0 | false |
| IRS990/ActivityOrMissionDesc | 0 | Our mission is to seek private financial support from the community to ensure that high-quality Library programs and services will always be available. |
| IRS990/AdvertisingGrp/TotalAmt | 0 | 0 |
| IRS990/AllOtherContributionsAmt | 0 | 206409 |
| IRS990/AllOtherExpensesGrp/FundraisingAmt | 0 | 203 |
| IRS990/AllOtherExpensesGrp/ManagementAndGeneralAmt | 0 | 550 |
| IRS990/AllOtherExpensesGrp/ProgramServicesAmt | 0 | 507 |
| IRS990/AllOtherExpensesGrp/TotalAmt | 0 | 1260 |
| IRS990/AnnualDisclosureCoveredPrsnInd | 0 | true |
| IRS990/BackupWthldComplianceInd | 0 | true |
| IRS990/BenefitsToMembersGrp/TotalAmt | 0 | 0 |
| IRS990/BooksInCareOfDetail/PersonNm | 0 | Sunil Pandya |
| IRS990/BooksInCareOfDetail/PhoneNum | 0 | 6505589100 |
| IRS990/BooksInCareOfDetail/USAddress/AddressLine1Txt | 0 | 55 W Third Avenue |
| IRS990/BooksInCareOfDetail/USAddress/CityNm | 0 | San Mateo |
| IRS990/BooksInCareOfDetail/USAddress/StateAbbreviationCd | 0 | CA |
| IRS990/BooksInCareOfDetail/USAddress/ZIPCd | 0 | 94402 |
| IRS990/BusinessRlnWith35CtrlEntInd | 0 | false |
| IRS990/BusinessRlnWithFamMemInd | 0 | false |
| IRS990/BusinessRlnWithOrgMemInd | 0 | false |
| IRS990/CashNonInterestBearingGrp/BOYAmt | 0 | 110603 |
| IRS990/CashNonInterestBearingGrp/EOYAmt | 0 | 102869 |
| IRS990/ChangeToOrgDocumentsInd | 0 | false |
| IRS990/CntrctRcvdGreaterThan100KCnt | 0 | 0 |
| IRS990/CollectionsOfArtInd | 0 | false |
| IRS990/CompCurrentOfcrDirectorsGrp/TotalAmt | 0 | 0 |
| IRS990/CompDisqualPersonsGrp/TotalAmt | 0 | 0 |
| IRS990/CompensationFromOtherSrcsInd | 0 | false |
| IRS990/CompensationProcessCEOInd | 0 | true |
| IRS990/CompensationProcessOtherInd | 0 | true |
| IRS990/ConferencesMeetingsGrp/TotalAmt | 0 | 0 |
| IRS990/ConflictOfInterestPolicyInd | 0 | true |
| IRS990/ConservationEasementsInd | 0 | false |
| IRS990/ConsolidatedAuditFinclStmtInd | 0 | false |
| IRS990/ContriRptFundraisingEventAmt | 0 | 68724 |
| IRS990/CreditCounselingInd | 0 | false |
| IRS990/CYBenefitsPaidToMembersAmt | 0 | 0 |
| IRS990/CYContributionsGrantsAmt | 0 | 275133 |
| IRS990/CYGrantsAndSimilarPaidAmt | 0 | 135000 |
| IRS990/CYInvestmentIncomeAmt | 0 | 18743 |
| IRS990/CYOtherExpensesAmt | 0 | 30580 |
| IRS990/CYOtherRevenueAmt | 0 | -6053 |
| IRS990/CYProgramServiceRevenueAmt | 0 | 0 |
| IRS990/CYRevenuesLessExpensesAmt | 0 | 23984 |
| IRS990/CYSalariesCompEmpBnftPaidAmt | 0 | 98259 |
| IRS990/CYTotalExpensesAmt | 0 | 263839 |
| IRS990/CYTotalFundraisingExpenseAmt | 0 | 25221 |
| IRS990/CYTotalProfFndrsngExpnsAmt | 0 | 0 |
| IRS990/CYTotalRevenueAmt | 0 | 287823 |
| IRS990/DecisionsSubjectToApprovaInd | 0 | false |
| IRS990/DeductibleArtContributionInd | 0 | false |
| IRS990/DeductibleNonCashContriInd | 0 | false |
| IRS990/DelegationOfMgmtDutiesInd | 0 | false |
| IRS990/DepreciationDepletionGrp/TotalAmt | 0 | 0 |
| IRS990/Desc | 0 | The San Mateo Public Library Foundation seeks private financial support from the community to ensure high-quality library services will always be available now and for future generations. Our objectives are:- Raise funds for the purchase of library materials and expanded collections, support of children's services, adult literacy programs, biotech resource librarian and improved facilities.- Support educational and promotional activities developed by the San Mateo Public Library.- Support special projects at the request of the City Librarian including cultural events for the community. |
| IRS990/DescribedInSection501c3Ind | 0 | true |
| IRS990/DisregardedEntityInd | 0 | false |
| IRS990/DocumentRetentionPolicyInd | 0 | true |
| IRS990/DonorAdvisedFundInd | 0 | false |
| IRS990/DonorRstrOrQuasiEndowmentsInd | 0 | false |
| IRS990/ElectionOfBoardMembersInd | 0 | false |
| IRS990/EmployeeCnt | 0 | 2 |
| IRS990/EmploymentTaxReturnsFiledInd | 0 | true |
| IRS990/EngagedInExcessBenefitTransInd | 0 | false |
| IRS990/ExpenseAmt | 0 | 198894 |
| IRS990/FamilyOrBusinessRlnInd | 0 | false |
| IRS990/FederalGrantAuditRequiredInd | 0 | false |
| IRS990/FeesForServicesAccountingGrp/FundraisingAmt | 0 | 832 |
| IRS990/FeesForServicesAccountingGrp/ManagementAndGeneralAmt | 0 | 1248 |
| IRS990/FeesForServicesAccountingGrp/ProgramServicesAmt | 0 | 2081 |
| IRS990/FeesForServicesAccountingGrp/TotalAmt | 0 | 4161 |
| IRS990/FeesForServicesLegalGrp/TotalAmt | 0 | 0 |
| IRS990/FeesForServicesLobbyingGrp/TotalAmt | 0 | 0 |
| IRS990/FeesForServicesManagementGrp/TotalAmt | 0 | 0 |
| IRS990/FeesForServicesOtherGrp/TotalAmt | 0 | 0 |
| IRS990/FeesForServicesProfFundraising/TotalAmt | 0 | 0 |
| IRS990/FeesForSrvcInvstMgmntFeesGrp/TotalAmt | 0 | 0 |
| IRS990/ForeignActivitiesInd | 0 | false |
| IRS990/ForeignFinancialAccountInd | 0 | false |
| IRS990/ForeignGrantsGrp/TotalAmt | 0 | 0 |
| IRS990/ForeignOfficeInd | 0 | false |
| IRS990/Form1098CFiledInd | 0 | false |
| IRS990/Form8282FiledCnt | 0 | 0 |
| IRS990/Form8282PropertyDisposedOfInd | 0 | false |
| IRS990/Form8899Filedind | 0 | false |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 0 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 1 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 2 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 3 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 4 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 5 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 6 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 7 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 8 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 9 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 10 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 11 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 12 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 0 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 1 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 2 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 3 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 4 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 5 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 6 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 7 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 8 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 9 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 10 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 11 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 12 | 2.00 |
| 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/IndividualTrusteeOrDirectorInd | 9 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 10 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 11 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 12 | 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/OfficerInd | 5 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 6 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 7 | 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 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 10 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 11 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 12 | 0 |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 0 | Jeanne Back |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 1 | Alexandra Gillen |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 2 | Martha Nora |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 3 | Sunil Pandya |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 4 | Chris Blom |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 5 | Marie Chuang |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 6 | Donna Divodi |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 7 | Diane Ervin |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 8 | Ann Girard |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 9 | Armaity Patel |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 10 | Suzanne Simms |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 11 | Erin Sinclair |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 12 | Renee Thierry-Jones |
| 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/ReportableCompFromOrgAmt | 10 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 11 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 12 | 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 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 10 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 11 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 12 | 0 |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 0 | Co-President |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 1 | Co-President |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 2 | Secretary |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 3 | Treasurer |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 4 | Board Member |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 5 | Board Member |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 6 | Board Member |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 7 | Board Member |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 8 | Board Member |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 9 | Board Member |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 10 | Board Member |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 11 | Board Member |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 12 | Board Member |
| IRS990/Form990ProvidedToGvrnBodyInd | 0 | true |
| IRS990/FormationYr | 0 | 1994 |
| IRS990/FormerOfcrEmployeesListedInd | 0 | false |
| IRS990/FSAuditedInd | 0 | false |
| IRS990/FundraisingActivitiesInd | 0 | true |
| IRS990/FundraisingAmt | 0 | 68724 |
| IRS990/FundraisingDirectExpensesAmt | 0 | 44685 |
| IRS990/FundraisingGrossIncomeAmt | 0 | 38632 |
| IRS990/GamingActivitiesInd | 0 | false |
| IRS990/GoverningBodyVotingMembersCnt | 0 | 13 |
| IRS990/GrantAmt | 0 | 135000 |
| IRS990/GrantsToDomesticIndividualsGrp/TotalAmt | 0 | 0 |
| IRS990/GrantsToDomesticOrgsGrp/ProgramServicesAmt | 0 | 135000 |
| IRS990/GrantsToDomesticOrgsGrp/TotalAmt | 0 | 135000 |
| IRS990/GrantsToIndividualsInd | 0 | false |
| IRS990/GrantsToOrganizationsInd | 0 | true |
| IRS990/GrantToRelatedPersonInd | 0 | false |
| IRS990/GrossReceiptsAmt | 0 | 332508 |
| IRS990/GroupReturnForAffiliatesInd | 0 | false |
| IRS990/IncludeFIN48FootnoteInd | 0 | false |
| IRS990/IncmFromInvestBondProceedsGrp/TotalRevenueColumnAmt | 0 | 0 |
| IRS990/IndependentAuditFinclStmtInd | 0 | false |
| IRS990/IndependentVotingMemberCnt | 0 | 13 |
| IRS990/IndivRcvdGreaterThan100KCnt | 0 | 0 |
| IRS990/IndoorTanningServicesInd | 0 | false |
| IRS990/InfoInScheduleOPartVIInd | 0 | X |
| IRS990/InformationTechnologyGrp/FundraisingAmt | 0 | 436 |
| IRS990/InformationTechnologyGrp/ManagementAndGeneralAmt | 0 | 654 |
| IRS990/InformationTechnologyGrp/ProgramServicesAmt | 0 | 1091 |
| IRS990/InformationTechnologyGrp/TotalAmt | 0 | 2181 |
| IRS990/InsuranceGrp/FundraisingAmt | 0 | 715 |
| IRS990/InsuranceGrp/ManagementAndGeneralAmt | 0 | 1073 |
| IRS990/InsuranceGrp/ProgramServicesAmt | 0 | 1789 |
| IRS990/InsuranceGrp/TotalAmt | 0 | 3577 |
| IRS990/IntangibleAssetsGrp/EOYAmt | 0 | 0 |
| IRS990/InterestGrp/TotalAmt | 0 | 0 |
| IRS990/InventoriesForSaleOrUseGrp/EOYAmt | 0 | 0 |
| IRS990/InvestmentIncomeGrp/ExclusionAmt | 0 | 18743 |
| IRS990/InvestmentIncomeGrp/TotalRevenueColumnAmt | 0 | 18743 |
| IRS990/InvestmentInJointVentureInd | 0 | false |
| IRS990/InvestmentsOtherSecuritiesGrp/BOYAmt | 0 | 937999 |
| IRS990/InvestmentsOtherSecuritiesGrp/EOYAmt | 0 | 1102542 |
| IRS990/InvestmentsProgramRelatedGrp/EOYAmt | 0 | 0 |
| IRS990/InvestmentsPubTradedSecGrp/EOYAmt | 0 | 0 |
| IRS990/IRPDocumentCnt | 0 | 2 |
| IRS990/IRPDocumentW2GCnt | 0 | 0 |
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| IRS990/MissionDesc | 0 | The San Mateo Public Library Foundation provides funding to bridge the gap between what city and state resources provide, and what our diverse community needs and expects from a 21st century community resource. |
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| IRS990/PrincipalOfficerNm | 0 | Jeanne Back |
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| IRS990/ProgSrvcAccomActy2Grp/Desc | 0 | The San Mateo Public Library Foundation and the San Mateo Public Library work together in a strong partnership to determine where private support can have the greatest impact without supplanting the publics role in funding a vibrant library system. Foundation funding provides critical support for Library programs that strengthen education and early literacy, enrich personal learning and recreation, foster economic and workforce development, and enhance the image and identity of San Mateo and its surrounding neighborhoods. |
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