Peoria County, Illinois
Peoria County, Illinois, has 178,553 residents (July 2025 estimate). Its county seat is Peoria. It uses Central Time and covers 619 sq mi (1,602 km²) of land.
- Resident population, July 2025
- 178,553
- Land area
- 619 sq mi (1,602 km²)
- County seat or government
- Peoria
- Time zone
- Central TimeUTC-06:00 in January; UTC-05:00 in July
- Median household income
- $65,108 ± $1,355
- Median home value
- $158,500 ± $2,588
- Median rent, with utilities
- $993 ± $28
- Homes lived in by their owners
- 67% ± 0.9 points
- County type
- County
- Metro or micro area
- Peoria, IL metro areaCentral county
- Water area
- 11.6 sq mi (29.9 km²)
- State
- Illinois
- County code (FIPS)
- 17143
- Coordinates (central point)
- 40.785972, -89.766993
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 Peoria 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
- 6160428,313 people
- 6161427,370 people
- 6161124,040 people
- 6161523,523 people
- 6160315,356 people
- 6160513,424 people
- 6152512,357 people
- 6160710,600 people
- 6152310,203 people
- 616066,684 people
- 616165,825 people
- 615593,595 people
All 29
29 ZIP Code areas overlap Peoria 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
Peoria 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 Peoria County, largest first
- Peoria City Township96,648 people
- Limestone Township18,116 people
- Medina Township13,918 people
- Kickapoo Township8,175 people
- Chillicothe Township8,157 people
- Richwoods Township5,825 people
- Radnor Township5,209 people
- Logan Township3,214 people
- Elmwood Township2,698 people
- Timber Township2,493 people
- Hollis Township1,771 people
- Princeville Township1,758 people
All 19
- Jubilee Township1,524 people
- Hallock Township1,455 people
- Akron Township1,136 people
- Rosefield Township1,014 people
- Brimfield Township987 people
- Trivoli Township952 people
- Millbrook Township404 people
People counts are American Community Survey 2020–2024 5-year estimates. All townships in Illinois, by county
School districts in Peoria County, largest first
- Peoria School District 15091,711 people
- Dunlap Community Unit School District 32327,845 people
- Limestone Community High School District 31020,677 people
- Illinois Valley Central Unit School District 32112,082 people
- Farmington Central Community Unit School District 2657,710 people
- Peoria Heights Community Unit School District 3256,618 people
- Illini Bluffs Community Unit School District 3275,559 people
- Stark County Community Unit School District 1004,249 people
- Princeville Community Unit School District 3264,136 people
- Elmwood Community Unit School District 3224,042 people
- Pleasant Valley School District 624,001 people
- Oak Grove School District 68 (Peoria County)3,750 people
All 20
- Norwood Elementary School District 633,577 people
- Monroe School District 703,375 people
- Brimfield Community Unit School District 3093,302 people
- Limestone Walters Community Consolidated School District 3162,045 people
- Williamsfield Community Unit School District 2101,932 people
- Pleasant Hill School District 691,689 people
- Bartonville School District 661,507 people
- Hollis Consolidated School District 328733 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.
- Peoria, Illinois (city)112,169 people
- Pekin, Illinois (city)31,781 people
- Chillicothe, Illinois (city)5,900 people
- Bartonville, Illinois (village)5,841 people
- Peoria Heights, Illinois (village)5,825 people
- West Peoria, Illinois (city)4,238 people
- Elmwood, Illinois (city)2,327 people
- Bellevue, Illinois (village)2,106 people
- Farmington, Illinois (city)2,050 people
- Rome, Illinois (CDP)1,947 people
- Princeville, Illinois (village)1,837 people
- Lake Camelot, Illinois (CDP)1,629 people
All 22
- Dunlap, Illinois (village)1,360 people
- Hanna City, Illinois (village)1,330 people
- Brimfield, Illinois (village)750 people
- Glasford, Illinois (village)720 people
- Norwood, Illinois (village)532 people
- Trivoli, Illinois (CDP)365 people
- Mapleton, Illinois (village)332 people
- Kingston Mines, Illinois (village)182 people
- Mossville, Illinois (CDP)51 people
- Smithville, Illinois (CDP)44 people
Bordering areas, nearest first
Distances are straight lines between map points.
- Stark County, Illinois22 mi north
- Tazewell County, Illinois23 mi southeast
- Knox County, Illinois25 mi northwest
- Marshall County, Illinois28 mi northeast
- Woodford County, Illinois29 mi east
- Fulton County, Illinois32 mi southwest
Before using this answer on a form
Use a precise point for address-level questions. A device accuracy circle can cross a boundary; confirm tax, voting or jury details with the responsible office.
Find the county where you are now, check its ZIP area, or check the time zone where you are.
Areas that only touch the edge
These areas meet the boundary only along a sliver. Most addresses here are not in them; for an address near the line, check with the county.