Civic Intelligence

Unitil Service Corp

Plan context: Unitil Corporation Retirement Plan

EIN 02-0383661 • Hampton, NH • 76 filings • 12 plans

6 Liberty Ln WHampton, NH 03842-1704
Current Snapshot

Latest Year

2025

2025 Participants

557

2025 Assets

$211,393,359

2025 Contributions

$6,710,504

Historical Graphs

Total Assets Over Time

Aggregate end-of-year assets by filing year, excluding zero-asset years

$211,393,359$105,696,680$0199920122024YearValue
$211,393,359Latest year 2024

Participants Over Time

Largest reported end-of-year plan headcount by filing year, used to avoid double-counting participants across overlapping plans

5572790199920122025YearValue
557Latest year 2025

Company Timeline

Year summaries and individual filings are combined here so you can stay in one place while moving across years and plan filings.

Year / FilingFilingsParticipantsAssetsContributionsContrib./Participant
20251557$0$0-
Unitil Service Corp Group Insurance Plan-557---
20243434$211,393,359$6,710,504$15,462iApproximate average salary by contribution assumption: employee only about $386,550 at 4% or $257,700 at 6%; with 50% employer match about $257,700 at 4% or $171,800 at 6%; with 100% employer match about $193,275 at 4% or $128,850 at 6%.
Unitil Corporation Retirement Plan-153$178,724,886$4,849,999$31,699iApproximate average salary by contribution assumption: employee only about $792,483 at 4% or $528,322 at 6%; with 50% employer match about $528,322 at 4% or $352,215 at 6%; with 100% employer match about $396,242 at 4% or $264,161 at 6%.
Unitil Retiree Health and Welfare Benefits Plan-0$32,668,473$1,860,505-
Unitil Service Corp Group Insurance Plan-434---
20233514$193,684,468$6,789,411$13,209iApproximate average salary by contribution assumption: employee only about $330,224 at 4% or $220,150 at 6%; with 50% employer match about $220,150 at 4% or $146,766 at 6%; with 100% employer match about $165,112 at 4% or $110,075 at 6%.
Unitil Corporation Retirement Plan-167$163,808,215$4,860,420$29,104iApproximate average salary by contribution assumption: employee only about $727,608 at 4% or $485,072 at 6%; with 50% employer match about $485,072 at 4% or $323,381 at 6%; with 100% employer match about $363,804 at 4% or $242,536 at 6%.
Unitil Retiree Health and Welfare Benefits Plan-0$29,876,253$1,928,991-
Unitil Service Corp Group Insurance Plan-514---
20223421$175,202,039$16,282,175$38,675iApproximate average salary by contribution assumption: employee only about $966,875 at 4% or $644,583 at 6%; with 50% employer match about $644,583 at 4% or $429,722 at 6%; with 100% employer match about $483,438 at 4% or $322,292 at 6%.
Unitil Corporation Retirement Plan-178$148,114,256$4,789,888$26,909iApproximate average salary by contribution assumption: employee only about $672,737 at 4% or $448,491 at 6%; with 50% employer match about $448,491 at 4% or $298,994 at 6%; with 100% employer match about $336,369 at 4% or $224,246 at 6%.
Unitil Retiree Health and Welfare Benefits Plan-0$27,087,783$11,492,287-
Unitil Service Corp Group Insurance Plan-421---
20213428$198,457,045$12,924,614$30,198iApproximate average salary by contribution assumption: employee only about $754,942 at 4% or $503,295 at 6%; with 50% employer match about $503,295 at 4% or $335,530 at 6%; with 100% employer match about $377,471 at 4% or $251,647 at 6%.
Unitil Corporation Retirement Plan-207$176,126,257$4,635,906$22,396iApproximate average salary by contribution assumption: employee only about $559,892 at 4% or $373,261 at 6%; with 50% employer match about $373,261 at 4% or $248,841 at 6%; with 100% employer match about $279,946 at 4% or $186,631 at 6%.
Unitil Retiree Health and Welfare Benefits Plan-0$22,330,788$8,288,708-
Unitil Service Corp Group Insurance Plan-428---
20203429$174,352,960$8,485,375$19,779iApproximate average salary by contribution assumption: employee only about $494,486 at 4% or $329,657 at 6%; with 50% employer match about $329,657 at 4% or $219,771 at 6%; with 100% employer match about $247,243 at 4% or $164,829 at 6%.
Unitil Corporation Retirement Plan-219$158,840,949$5,058,777$23,099iApproximate average salary by contribution assumption: employee only about $577,486 at 4% or $384,991 at 6%; with 50% employer match about $384,991 at 4% or $256,660 at 6%; with 100% employer match about $288,743 at 4% or $192,495 at 6%.
Unitil Retiree Health and Welfare Benefits Plan-0$15,512,011$3,426,598-
Unitil Service Corp Group Insurance Plan-429---
20193403$157,744,538$8,830,678$21,912iApproximate average salary by contribution assumption: employee only about $547,809 at 4% or $365,206 at 6%; with 50% employer match about $365,206 at 4% or $243,471 at 6%; with 100% employer match about $273,904 at 4% or $182,603 at 6%.
Unitil Corporation Retirement Plan-229$144,769,956$5,609,899$24,497iApproximate average salary by contribution assumption: employee only about $612,434 at 4% or $408,290 at 6%; with 50% employer match about $408,290 at 4% or $272,193 at 6%; with 100% employer match about $306,217 at 4% or $204,145 at 6%.
Unitil Retiree Health and Welfare Benefits Plan-0$12,974,582$3,220,779-
Unitil Service Corp Group Insurance Plan-403---
20183513$136,018,988$12,814,288$24,979iApproximate average salary by contribution assumption: employee only about $624,478 at 4% or $416,319 at 6%; with 50% employer match about $416,319 at 4% or $277,546 at 6%; with 100% employer match about $312,239 at 4% or $208,159 at 6%.
Unitil Corporation Retirement Plan-249$125,999,491$9,629,534$38,673iApproximate average salary by contribution assumption: employee only about $966,821 at 4% or $644,547 at 6%; with 50% employer match about $644,547 at 4% or $429,698 at 6%; with 100% employer match about $483,410 at 4% or $322,274 at 6%.
Unitil Retiree Health and Welfare Benefits Plan-0$10,019,497$3,184,754-
Unitil Service Corp Group Insurance Plan-513---
20173502$137,617,701$18,965,631$37,780iApproximate average salary by contribution assumption: employee only about $944,504 at 4% or $629,669 at 6%; with 50% employer match about $629,669 at 4% or $419,779 at 6%; with 100% employer match about $472,252 at 4% or $314,835 at 6%.
Unitil Corporation Retirement Plan-267$128,003,882$15,803,094$59,188iApproximate average salary by contribution assumption: employee only about $1,479,690 at 4% or $986,460 at 6%; with 50% employer match about $986,460 at 4% or $657,640 at 6%; with 100% employer match about $739,845 at 4% or $493,230 at 6%.
Unitil Retiree Health and Welfare Benefits Plan-0$9,613,819$3,162,537-
Unitil Service Corp Group Insurance Plan-502---
20163497$113,008,114$8,187,848$16,475iApproximate average salary by contribution assumption: employee only about $411,864 at 4% or $274,576 at 6%; with 50% employer match about $274,576 at 4% or $183,050 at 6%; with 100% employer match about $205,932 at 4% or $137,288 at 6%.
Unitil Corporation Retirement Plan-291$105,122,076$5,027,222$17,276iApproximate average salary by contribution assumption: employee only about $431,892 at 4% or $287,928 at 6%; with 50% employer match about $287,928 at 4% or $191,952 at 6%; with 100% employer match about $215,946 at 4% or $143,964 at 6%.
Unitil Retiree Health and Welfare Benefits Plan-0$7,886,038$3,160,626-
Unitil Service Corp Group Insurance Plan-497---
20153494$106,530,130$9,214,294$18,652iApproximate average salary by contribution assumption: employee only about $466,310 at 4% or $310,874 at 6%; with 50% employer match about $310,874 at 4% or $207,249 at 6%; with 100% employer match about $233,155 at 4% or $155,437 at 6%.
Unitil Corporation Retirement Plan-302$99,649,152$6,032,400$19,975iApproximate average salary by contribution assumption: employee only about $499,371 at 4% or $332,914 at 6%; with 50% employer match about $332,914 at 4% or $221,943 at 6%; with 100% employer match about $249,685 at 4% or $166,457 at 6%.
Unitil Retiree Health and Welfare Benefits Plan-0$6,880,978$3,181,894-
Unitil Service Corp Group Insurance Plan-494---
20143491$103,809,832$10,483,311$21,351iApproximate average salary by contribution assumption: employee only about $533,773 at 4% or $355,849 at 6%; with 50% employer match about $355,849 at 4% or $237,233 at 6%; with 100% employer match about $266,887 at 4% or $177,924 at 6%.
Unitil Corporation Retirement Plan-324$97,415,474$7,527,931$23,234iApproximate average salary by contribution assumption: employee only about $580,859 at 4% or $387,239 at 6%; with 50% employer match about $387,239 at 4% or $258,159 at 6%; with 100% employer match about $290,429 at 4% or $193,620 at 6%.
Unitil Retiree Health and Welfare Benefits Plan--$6,394,358$2,955,380-
Unitil Service Corp Group Insurance Plan-491---
20133478$95,019,717$4,949,164$10,354iApproximate average salary by contribution assumption: employee only about $258,847 at 4% or $172,565 at 6%; with 50% employer match about $172,565 at 4% or $115,043 at 6%; with 100% employer match about $129,424 at 4% or $86,282 at 6%.
Unitil Corporation Retirement Plan-347$89,507,442$1,631,234$4,701iApproximate average salary by contribution assumption: employee only about $117,524 at 4% or $78,349 at 6%; with 50% employer match about $78,349 at 4% or $52,233 at 6%; with 100% employer match about $58,762 at 4% or $39,175 at 6%.
Unitil Retiree Health and Welfare Benefits Plan-0$5,512,275$3,317,930-
Unitil Service Corp Group Insurance Plan-478---
20123461$84,418,837$7,130,104$15,467iApproximate average salary by contribution assumption: employee only about $386,665 at 4% or $257,777 at 6%; with 50% employer match about $257,777 at 4% or $171,851 at 6%; with 100% employer match about $193,333 at 4% or $128,888 at 6%.
Unitil Corporation Retirement Plan-369$80,722,293$5,214,000$14,130iApproximate average salary by contribution assumption: employee only about $353,252 at 4% or $235,501 at 6%; with 50% employer match about $235,501 at 4% or $157,001 at 6%; with 100% employer match about $176,626 at 4% or $117,751 at 6%.
Unitil Retiree Health and Welfare Benefits Plan-0$3,696,544$1,916,104-
Unitil Service Corp Group Insurance Plan-461---
20113457$75,281,020$11,468,809$25,096iApproximate average salary by contribution assumption: employee only about $627,397 at 4% or $418,264 at 6%; with 50% employer match about $418,264 at 4% or $278,843 at 6%; with 100% employer match about $313,698 at 4% or $209,132 at 6%.
Unitil Corporation Retirement Plan-390$71,739,785$11,454,000$29,369iApproximate average salary by contribution assumption: employee only about $734,231 at 4% or $489,487 at 6%; with 50% employer match about $489,487 at 4% or $326,325 at 6%; with 100% employer match about $367,115 at 4% or $244,744 at 6%.
Unitil Retiree Health and Welfare Benefits Plan-0$3,541,235$14,809-
Unitil Service Corp Group Insurance Plan-457---
20103438$68,570,215$11,408,889$26,048iApproximate average salary by contribution assumption: employee only about $651,192 at 4% or $434,128 at 6%; with 50% employer match about $434,128 at 4% or $289,419 at 6%; with 100% employer match about $325,596 at 4% or $217,064 at 6%.
Unitil Corporation Retirement Plan-409$63,423,712$8,419,878$20,586iApproximate average salary by contribution assumption: employee only about $514,662 at 4% or $343,108 at 6%; with 50% employer match about $343,108 at 4% or $228,739 at 6%; with 100% employer match about $257,331 at 4% or $171,554 at 6%.
Unitil Retiree Health and Welfare Benefits Plan-0$5,146,503$2,989,011-
Unitil Service Corp Group Insurance Plan-438---
20093429$55,451,490$4,782,785$11,149iApproximate average salary by contribution assumption: employee only about $278,717 at 4% or $185,811 at 6%; with 50% employer match about $185,811 at 4% or $123,874 at 6%; with 100% employer match about $139,359 at 4% or $92,906 at 6%.
Unitil Corporation Retirement Plan-429$51,988,102$2,641,122$6,156iApproximate average salary by contribution assumption: employee only about $153,912 at 4% or $102,608 at 6%; with 50% employer match about $102,608 at 4% or $68,405 at 6%; with 100% employer match about $76,956 at 4% or $51,304 at 6%.
Unitil Retiree Health and Welfare Benefits Plan-0$3,463,388$2,141,663-
Unitil Service Corp Group Insurance Plan-427---
20083409$47,265,572$6,926,800$16,936iApproximate average salary by contribution assumption: employee only about $423,399 at 4% or $282,266 at 6%; with 50% employer match about $282,266 at 4% or $188,177 at 6%; with 100% employer match about $211,699 at 4% or $141,133 at 6%.
Unitil Corporation Retirement Plan-409$44,661,132$4,871,000$11,910iApproximate average salary by contribution assumption: employee only about $297,738 at 4% or $198,492 at 6%; with 50% employer match about $198,492 at 4% or $132,328 at 6%; with 100% employer match about $148,869 at 4% or $99,246 at 6%.
Unitil Retiree Health and Welfare Benefits Plan-0$2,604,440$2,055,800-
Unitil Service Corp Group Insurance Plan-409---
20073295$59,153,504$5,300,000$17,966iApproximate average salary by contribution assumption: employee only about $449,153 at 4% or $299,435 at 6%; with 50% employer match about $299,435 at 4% or $199,623 at 6%; with 100% employer match about $224,576 at 4% or $149,718 at 6%.
Unitil Corporation Retirement Plan-290$56,335,550$3,169,582$10,930iApproximate average salary by contribution assumption: employee only about $273,240 at 4% or $182,160 at 6%; with 50% employer match about $182,160 at 4% or $121,440 at 6%; with 100% employer match about $136,620 at 4% or $91,080 at 6%.
Unitil Retiree Health and Welfare Benefits Plan-0$2,817,954$2,130,418-
Unitil Service Corp Group Insurance Plan-295---
20063305$55,459,798$7,520,000$24,656iApproximate average salary by contribution assumption: employee only about $616,393 at 4% or $410,929 at 6%; with 50% employer match about $410,929 at 4% or $273,953 at 6%; with 100% employer match about $308,197 at 4% or $205,464 at 6%.
Unitil Corporation Retirement Plan-301$53,359,383$5,585,511$18,557iApproximate average salary by contribution assumption: employee only about $463,913 at 4% or $309,275 at 6%; with 50% employer match about $309,275 at 4% or $206,183 at 6%; with 100% employer match about $231,956 at 4% or $154,638 at 6%.
Unitil Retiree Health and Welfare Benefits Plan-0$2,100,415$1,934,489-
Unitil Service Corp Group Insurance Plan-305---
20052309$46,901,912$8,623,721$27,908iApproximate average salary by contribution assumption: employee only about $697,712 at 4% or $465,141 at 6%; with 50% employer match about $465,141 at 4% or $310,094 at 6%; with 100% employer match about $348,856 at 4% or $232,571 at 6%.
Unitil Corporation Retirement Plan-309$45,177,624$2,849,000$9,220iApproximate average salary by contribution assumption: employee only about $230,502 at 4% or $153,668 at 6%; with 50% employer match about $153,668 at 4% or $102,445 at 6%; with 100% employer match about $115,251 at 4% or $76,834 at 6%.
Unitil Service Corp Group Insurance Plan-291$1,724,288$5,774,721$19,844iApproximate average salary by contribution assumption: employee only about $496,110 at 4% or $330,740 at 6%; with 50% employer match about $330,740 at 4% or $220,493 at 6%; with 100% employer match about $248,055 at 4% or $165,370 at 6%.
20042314$42,588,887$2,285,000$7,277iApproximate average salary by contribution assumption: employee only about $181,927 at 4% or $121,285 at 6%; with 50% employer match about $121,285 at 4% or $80,856 at 6%; with 100% employer match about $90,963 at 4% or $60,642 at 6%.
Unitil Corporation Retirement Plan-314$42,588,887$2,285,000$7,277iApproximate average salary by contribution assumption: employee only about $181,927 at 4% or $121,285 at 6%; with 50% employer match about $121,285 at 4% or $80,856 at 6%; with 100% employer match about $90,963 at 4% or $60,642 at 6%.
Unitil Service Corp Group Insurance Plan-314---
20033322$64,100,737$3,242,003$10,068iApproximate average salary by contribution assumption: employee only about $251,708 at 4% or $167,806 at 6%; with 50% employer match about $167,806 at 4% or $111,870 at 6%; with 100% employer match about $125,854 at 4% or $83,903 at 6%.
Unitil Corporation Retirement Plan-318$39,336,662$1,200,000$3,774iApproximate average salary by contribution assumption: employee only about $94,340 at 4% or $62,893 at 6%; with 50% employer match about $62,893 at 4% or $41,929 at 6%; with 100% employer match about $47,170 at 4% or $31,447 at 6%.
Unitil Corporation Tax Deferred Savings and Investment Plan-316$24,764,075$2,042,003$6,462iApproximate average salary by contribution assumption: employee only about $161,551 at 4% or $107,701 at 6%; with 50% employer match about $107,701 at 4% or $71,800 at 6%; with 100% employer match about $80,775 at 4% or $53,850 at 6%.
Unitil Service Corp Group Insurance Plan-322---
20023335$54,783,520$2,142,905$6,397iApproximate average salary by contribution assumption: employee only about $159,918 at 4% or $106,612 at 6%; with 50% employer match about $106,612 at 4% or $71,075 at 6%; with 100% employer match about $79,959 at 4% or $53,306 at 6%.
Unitil Corporation Retirement Plan-329$34,243,649--
Unitil Corporation Tax Deferred Savings and Investment Plan-331$20,539,871$2,142,905$6,474iApproximate average salary by contribution assumption: employee only about $161,851 at 4% or $107,901 at 6%; with 50% employer match about $107,901 at 4% or $71,934 at 6%; with 100% employer match about $80,925 at 4% or $53,950 at 6%.
Unitil Service Corp Group Insurance Plan-335---
20013346$62,599,717$1,788,781$5,170iApproximate average salary by contribution assumption: employee only about $129,247 at 4% or $86,165 at 6%; with 50% employer match about $86,165 at 4% or $57,443 at 6%; with 100% employer match about $64,624 at 4% or $43,082 at 6%.
Unitil Corporation Retirement Plan-323$41,057,388--
Unitil Corporation Tax Deferred Savings and Investment Plan-346$21,542,329$1,788,781$5,170iApproximate average salary by contribution assumption: employee only about $129,247 at 4% or $86,165 at 6%; with 50% employer match about $86,165 at 4% or $57,443 at 6%; with 100% employer match about $64,624 at 4% or $43,082 at 6%.
Unitil Service Corp Group Insurance Plan-330---
20003343$23,737,392$1,780,134$5,190iApproximate average salary by contribution assumption: employee only about $129,747 at 4% or $86,498 at 6%; with 50% employer match about $86,498 at 4% or $57,666 at 6%; with 100% employer match about $64,874 at 4% or $43,249 at 6%.
Unitil Corporation Tax Deferred Savings and Investment Plan-341$23,737,392$1,780,134$5,220iApproximate average salary by contribution assumption: employee only about $130,508 at 4% or $87,006 at 6%; with 50% employer match about $87,006 at 4% or $58,004 at 6%; with 100% employer match about $65,254 at 4% or $43,503 at 6%.
Unitil Service Corp Group Insurance Plan-343---
Unitil Corporation Retirement Plan-321---
19992338$26,576,767$1,698,350$5,025iApproximate average salary by contribution assumption: employee only about $125,618 at 4% or $83,745 at 6%; with 50% employer match about $83,745 at 4% or $55,830 at 6%; with 100% employer match about $62,809 at 4% or $41,873 at 6%.
Unitil Corporation Tax Deferred Savings and Investment Plan-338$26,576,767$1,698,350$5,025iApproximate average salary by contribution assumption: employee only about $125,618 at 4% or $83,745 at 6%; with 50% employer match about $83,745 at 4% or $55,830 at 6%; with 100% employer match about $62,809 at 4% or $41,873 at 6%.
Unitil Service Corp Group Insurance Plan-328---