Photo: Robert Lawton · CC BY-SA 2.5How is O'Fallon run?
O'Fallon’s city government spent $32.5 million on day-to-day services in the year to April 30, 2022, about $1,099 per resident. Water and other utilities ($10.5 million) are counted separately.
What stands out about how O'Fallon is run
Read from the city’s budget and official records.
Who’s in charge in O'Fallon
From public records with a current term; a name is hidden the day its term ends.
Council members and agencies: ofallon.org ↗
O'Fallon’s meeting calendar isn’t in our feed yet. The city posts agendas and minutes on ofallon.org ↗.
About $1,099 per resident a year, or $3.01 a day
Day-to-day services only. The biggest line: police, at 34%.
Thank you for being a neighbor
$1,099 per resident in 2022, close to the middle of similar cities
O'Fallon’s day-to-day spending in 2022 ($1,099 per resident, hospital and utilities left out) against 44 Illinois cities of 25,000–49,999 that don’t run their own schools: the median was $1,158, and the middle half spent $937–$1,570. O'Fallon spent less than 59% of them.
Later years come from a Census sample, so the comparison stays on 2022. How Town Hall compares budgets →
Illinois cities of 25,000–49,999 that don’t run their own schools, 2022 Census of Governments (every government counted that year; O'Fallon itself left out).
No trend yet
O'Fallon reported only 2022 to the Census Bureau, so there is no trend yet.
full-time in March 2025, up from 198 in 2022. Both are Census estimates.
The typical homeowner pays $5,827 a year
Every local property tax on the home: town, schools and county. About 1.97% 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 O'Fallon’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.
Tax bills are one input to O'Fallon’s Cost of living grade. Cost of living in O'Fallon →
One full-time city employee for every 144 residents
On the payroll in March 2025, from the Census Bureau’s Annual Survey of Public Employment & Payroll. Residents: the Census population in the 2022 finance file (29,606).
By department full-time, plus part-time, March 2025
The Census reports one month’s payroll (March); yearly figures are that month × 12, an estimate. Part-timers count half in the bar lengths.
O'Fallon Township High School District 203
O'Fallon’s high school district, shared with O'Fallon Township, Shiloh Valley Township, Shiloh, Caseyville Township. It’s its own government, with a budget separate from the town’s.
Of the $16,315 per pupil, $9,682 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.
O'Fallon Community Consolidated School District 90 · $12,394 per pupil
Central School District 104 · $27,085 per pupil
Mascoutah Community Unit School District 19 · $15,184 per pupil
School year 2023–24. Census Bureau school finance survey.
O'Fallon’s votes are counted by county
Illinois reports official results by county and precinct, not by city, so there are no official results for O'Fallon alone, and we don’t estimate them. These are St. Clair County’s results.
Kamala D HarrisDemocrat52.5%63,433 votes
Donald J TrumpRepublican44.7%54,021 votesOthers: 2.8% (3,425 votes).
Most votes in St. Clair County: Kamala D Harris
Illinois: Harris 54.4%, Trump 43.5%
100% of O'Fallon lies in St. Clair County. Every 2024 race in St. Clair County is on the county’s page.
St. Clair 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
O'Fallon sends 4 representatives to the Illinois House alone.
- 1Your cityMayorEric Van Hookas listed by Open States, October 9, 2026
- 2Illinois HouseO'Fallon is split between 4 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 O'Fallon compares with the towns next door
O'Fallon spent $1,099 per resident in 2022; the 6 neighbors that reported 2022 spent $56 to $1,245. Towns that run more services spend more. Tap a town to see its page.
| Town | Day-to-day, per resident (2022) | Tax bill |
|---|---|---|
| O'Fallon Township | $56 | $5,696 |
| St. Clair Township | $88 | $4,099 |
| Caseyville Township | $147 | $3,487 |
| Shiloh | $538 | $4,861 |
| Swansea | $754 | $4,759 |
| Fairview Heights | $1,245 | $3,105 |
| Shiloh Valley Township | estimate | $5,371 |
| O'Fallon | $1,099 | $5,827 |
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 O'Fallon’s government
The official site has phone numbers, hours and forms. Neighbors add the rest to the Handbook.
Questions about O'Fallon’s government
How much does O'Fallon spend per resident?
About $1,099 per resident on day-to-day services in the year to April 30, 2022, as reported to the Census Bureau. In 2022, the last full count, its $1,099 was less than 59% of 44 Illinois cities of 25,000–49,999 that don’t run their own schools.
What is the property tax rate in O'Fallon?
Homeowners report a typical bill of $5,827 a year (Census ACS, 2020–24), about 1.97% of the typical home’s value, vs 2.01% across Illinois. For the official rate per $1,000 of assessed value, see ofallon.org.
Who is the mayor of O'Fallon?
Eric Van Hook, as listed by Open States (checked October 9, 2026). The council and agencies are listed on ofallon.org.
How did O'Fallon vote in 2024?
Illinois counts votes by county and precinct, not by city, so there are no official results for O'Fallon alone. St. Clair County, where 100% of O'Fallon lies, voted Harris 52.5%, Trump 44.7% for president; its page has every race.
How many people work for O'Fallon?
206 full-time and 184 part-time employees in March 2025, with a March payroll of $1.6M (about $19.5M a year if every month were the same), as reported to the Census Bureau.
Who represents O'Fallon in the state legislature?
O'Fallon is split among 4 State House districts and 3 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 O'Fallon’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 →