Hamilton County, Illinois
Hamilton County, Illinois, has 7,859 residents (July 2025 estimate). Its county seat is McLeansboro. It uses Central Time and covers 435 sq mi (1,126 km²) of land.
- Resident population, July 2025
- 7,859
- Land area
- 435 sq mi (1,126 km²)
- County seat or government
- McLeansboro
- Time zone
- Central TimeUTC-06:00 in January; UTC-05:00 in July
- Median household income
- $65,746 ± $6,413
- Median home value
- $113,700 ± $12,488
- Median rent, with utilities
- $568 ± $54
- Homes lived in by their owners
- 76.4% ± 4.3 points
- County type
- County
- Metro or micro area
- Outside any metro or micro areaNext to: Mount Vernon, IL micro area
- Water area
- 1.22 sq mi (3.16 km²)
- State
- Illinois
- County code (FIPS)
- 17065
- Coordinates (central point)
- 38.085227, -88.539009
These coordinates mark a central point for the area, not a street address. Income, home value, rent and homes lived in by their owners: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, ± margin at 90% confidence; checked on October 13, 2026.
Time zones in Hamilton County
| Time zone | Local time and UTC offset | Next clock change |
|---|---|---|
| Central TimeAmerica/Chicago | UTC-06:00 in January; UTC-05:00 in July. Enable JavaScript for the live clock. | Enable JavaScript for upcoming changes. |
Near a time-zone line, check where you are with the time-zone finder. Your phone’s setting can differ.
ZIP Code areas, largest first
- 629305,761 people
- 628595,004 people
- 628692,795 people
- 628902,377 people
- 629352,178 people
- 628951,960 people
- 628281,801 people
- 628351,398 people
- 628101,188 people
- 62817639 people
- 62860384 people
- 62887104 people
All 13
- 6282922 people
13 ZIP Code areas overlap Hamilton County. People counts are 2020–2024 estimates for each whole ZIP area. Mailing ZIPs can differ; check an address with USPS ZIP Code Lookup.
Official county information
Hamilton County government website ↗ is the next stop for county offices, tax, voting, jury and records information. A geographic lookup cannot determine eligibility, tax liability or a court obligation.
Townships in Hamilton County, largest first
- McLeansboro Township3,644 people
- Dahlgren Township1,390 people
- Mayberry Township557 people
- Knight Prairie Township530 people
- Crouch Township427 people
- Crook Township358 people
- Twigg Township301 people
- Flannigan Township266 people
- Beaver Creek Township148 people
- South Flannigan Township112 people
- South Crouch Township101 people
- South Twigg Township82 people
People counts are American Community Survey 2020–2024 5-year estimates. All townships in Illinois, by county
School districts in Hamilton County, largest first
- Benton Consolidated High School District 10312,750 people
- Hamilton County Community Unit School District 107,368 people
- Eldorado Community Unit School District 46,609 people
- Norris City-Omaha-Enfield Community Unit School District 34,765 people
- Wayne City Community Unit School District 1003,704 people
- Galatia Community Unit School District 12,322 people
- Thompsonville Community Unit School District 1741,792 people
- Akin Community Consolidated School District 91762 people
Districts with land in the county; a district can cross county lines. People counts are American Community Survey 2020–2024 5-year estimates. A district boundary doesn’t decide which school a student attends.
Cities, towns and communities, largest first
These areas overlap the mapped boundary; an overlap does not mean that every address belongs to both.
- McLeansboro, Illinois (city)2,675 people
- Dahlgren, Illinois (village)595 people
- Broughton, Illinois (village)206 people
- Belle Prairie City, Illinois (town)72 people
- Macedonia, Illinois (village)31 people
Bordering areas, nearest first
Distances are straight lines between map points.
- White County, Illinois20 mi east
- Franklin County, Illinois22 mi west
- Saline County, Illinois23 mi south
- Wayne County, Illinois25 mi north
- Jefferson County, Illinois26 mi northwest
Before using this answer on a form
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