Photo: IvoShandor · CC BY-SA 3.0Seneca spent more per resident in 2022 than 92% of similar cities
Seneca’s village government spent $2.5 million on day-to-day services in the year to March 31, 2022, about $1,109 per resident. Water and other utilities ($285,000) are counted separately.
What stands out about how Seneca is run
Read from the village’s budget and official records.
$1,109 per resident in 2022: more than 92% of them
Seneca’s day-to-day spending in 2022 ($1,109 per resident, hospital and utilities left out) against 637 Illinois cities of under 2,500 that don’t run their own schools: the median was $501, and the middle half spent $342–$713. Seneca spent more than 92% of them.
Includes sewer and trash ($249,000), as the Census Bureau counts them. Later years come from a Census sample, so the comparison stays on 2022. How Town Hall compares budgets →
Illinois cities of under 2,500 that don’t run their own schools, 2022 Census of Governments (every government counted that year; Seneca itself left out).
About $1,109 per resident a year, or $3.04 a day
Day-to-day services only. The biggest line: police, at 37%.
Thank you for being a neighbor
No trend yet
Seneca reported only 2022 to the Census Bureau, so there is no trend yet.
The typical homeowner pays $3,627 a year
Every local property tax on the home: town, schools and county. About 1.59% of the home’s value, vs 2.01% across Illinois.
Typical yearly bill next door and statewide
The Housing page’s calculator splits a monthly payment into loan, tax and insurance at Seneca’s rate.
Can I afford it? →The median bill homeowners report to the Census survey (bills of $10,000+ are reported as “$10,000+”). The effective rate is that bill ÷ the median home value: a rough guide, not the official tax rate. In a town this small the estimate has a wide margin.
Tax bills are one input to Seneca’s Cost of living grade. Cost of living in Seneca →
Who’s in charge in Seneca
Names change after every election, so we link to the source that keeps them current.
One full-time village employee for every 171 residents
On the payroll in March 2022, from the Census Bureau’s Annual Survey of Public Employment & Payroll. Residents: the Census population in the 2022 finance file (2,217).
By department full-time, plus part-time, March 2022
The Census reports one month’s payroll (March); yearly figures are that month × 12, an estimate. Part-timers count half in the bar lengths.
Seneca Township High School District 160
Seneca’s high school district, shared with Kinsman, Mazon Township, Mazon, Verona, Vienna Township and more. It’s its own government, with a budget separate from the town’s.
Of the $38,565 per pupil, $19,825 goes to the classroom (teachers, aides, supplies); the rest to buses, buildings, counselors and administration. Building projects and debt payments aren’t in the per-pupil figure.
Illinois districts overall: 52% local, 38% state, 10% federal.
Seneca Community Consolidated School District 170 · $25,653 per pupil
Nettle Creek Community Consolidated School District 24C · $23,654 per pupil
Morris Community High School District 101 · $13,309 per pupil
School year 2023–24. Census Bureau school finance survey.
Seneca’s votes are counted by county
Illinois reports official results by county and precinct, not by village, so there are no official results for Seneca alone, and we don’t estimate them. These are LaSalle County’s results.
Donald J TrumpRepublican58.2%30,717 votes
Kamala D HarrisDemocrat39.9%21,029 votesOthers: 1.9% (1,018 votes).
Most votes in LaSalle County: Donald J Trump
Illinois: Harris 54.4%, Trump 43.5%
100% of Seneca lies in LaSalle County; the rest in Grundy County. Every 2024 race in LaSalle County is on the county’s page.
LaSalle County’s 2024 results →Official 2024 general election returns, as certified (MIT Election Data + Science Lab). Percentages are of votes for candidates; blank and spoiled ballots aren’t counted. Candidates are listed by votes, and party colors are neutral on purpose.
Portraits: Kamala D Harris: official vice-presidential portrait, Lawrence Jackson, The White House, 2021; Donald J Trump: official portrait, Shealah Craighead, The White House, 2017. All are U.S. government works in the public domain. A race shows photos only when every candidate has an official portrait; otherwise every candidate in it gets initials.
From town hall to Washington
Every level of government that speaks for Seneca.
- 1Your cityMayor & councilLocal officials aren’t on record yet.
- 2Illinois HouseSeneca is split between 2 districts
- 3Illinois SenateState senator
- 4GovernorStatewide
- 5U.S. HouseSplit between districts
- 6U.S. SenateBoth represent all of Illinois
Democrat · Republican · other or independent. Tap a name for their official page.
How Seneca compares with the towns next door
Seneca spent $1,109 per resident in 2022. Most of its neighbors are townships, a different kind of government, so the like-for-like comparison is with similar cities, above. Tap a town to see its page.
| Town | Day-to-day, per resident (2022) | Tax bill |
|---|---|---|
| Manlius Township | $96 | $2,950 |
| Brookfield Township | $544 | $4,174 |
| Seneca | $1,109 | $3,627 |
Day-to-day spending in 2022, the last year every government was counted, for governments that reported it; hospital and utilities left out. Tax bill: the typical homeowner’s bill (Census ACS, 2020–24).
Reach Seneca’s government
Neighbors add phone numbers and hours to the Handbook.
Questions about Seneca’s government
How much does Seneca spend per resident?
About $1,109 per resident on day-to-day services in the year to March 31, 2022, as reported to the Census Bureau. In 2022, the last full count, its $1,109 was more than 92% of 637 Illinois cities of under 2,500 that don’t run their own schools.
What is the property tax rate in Seneca?
Homeowners report a typical bill of $3,627 a year (Census ACS, 2020–24), about 1.59% of the typical home’s value, vs 2.01% across Illinois. For the official rate per $1,000 of assessed value, see the village’s assessor.
Who runs Seneca’s government?
We name an official only when a public source lists a current term, and none does for Seneca yet.
How did Seneca vote in 2024?
Illinois counts votes by county and precinct, not by village, so there are no official results for Seneca alone. LaSalle County, where 100% of Seneca lies, voted Trump 58.2%, Harris 39.9% for president; its page has every race.
How many people work for Seneca?
13 full-time and 7 part-time employees in March 2022, with a March payroll of $68,070 (about $816,840 a year if every month were the same), as reported to the Census Bureau.
Who represents Seneca in the state legislature?
Seneca is split among 2 State House districts and 2 State Senate districts, so your address decides. The Illinois Legislature’s lookup finds yours. Listed by Open States; districts from the Census Bureau.
Ask neighbors about Seneca’s government
Neighbors who’ve been to the meetings can help.
Budget and staff: U.S. Census Bureau, Census of Governments (2022, every government) and Annual Survey of State and Local Government Finances (2023–24, a sample) and the Annual Survey of Public Employment & Payroll; day-to-day spending is current operations, with hospitals, utilities and airports apart. School district: Census school finance survey, 2023–24. Property tax: Census American Community Survey, 2020–24. Elections: official 2024 returns via the MIT Election Data + Science Lab; turnout uses Census citizen voting-age population (CVAP, 2020–24). Officials: Open States, names shown only with a current term (checked October 9, 2026). Districts: Census Bureau (119th Congress, 2024 state districts); legislators: Open States and congress-legislators. How Town Hall works →