Tazewell County, Illinois
Tazewell County, Illinois, has 130,049 residents (July 2025 estimate). Its county seat is Pekin. It uses Central Time and covers 646 sq mi (1,674 km²) of land.
- Resident population, July 2025
- 130,049
- Land area
- 646 sq mi (1,674 km²)
- County seat or government
- Pekin
- Time zone
- Central TimeUTC-06:00 in January; UTC-05:00 in July
- Median household income
- $77,982 ± $1,962
- Median home value
- $167,500 ± $2,913
- Median rent, with utilities
- $909 ± $34
- Homes lived in by their owners
- 78.4% ± 1.3 points
- County type
- County
- Metro or micro area
- Peoria, IL metro areaCentral county
- Water area
- 11.5 sq mi (29.7 km²)
- State
- Illinois
- County code (FIPS)
- 17179
- Coordinates (central point)
- 40.508074, -89.516260
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 Tazewell 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
- 6155440,577 people
- 6157124,470 people
- 6161124,040 people
- 6155018,792 people
- 615306,470 people
- 616104,621 people
- 615684,483 people
- 617554,364 people
- 615463,849 people
- 617342,443 people
- 617322,099 people
- 615351,748 people
All 21
21 ZIP Code areas overlap Tazewell 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
Tazewell 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 Tazewell County, largest first
- Pekin Township27,280 people
- Washington Township24,276 people
- Groveland Township18,513 people
- Morton Township17,998 people
- Fondulac Township12,186 people
- Cincinnati Township8,797 people
- Mackinaw Township4,240 people
- Elm Grove Township2,954 people
- Tremont Township2,653 people
- Delavan Township1,881 people
- Hopedale Township1,806 people
- Spring Lake Township1,658 people
All 19
- Deer Creek Township1,331 people
- Little Mackinaw Township1,252 people
- Sand Prairie Township1,192 people
- Dillon Township1,055 people
- Hittle Township571 people
- Boynton Township406 people
- Malone Township241 people
People counts are American Community Survey 2020–2024 5-year estimates. All townships in Illinois, by county
School districts in Tazewell County, largest first
- Pekin Community High School District 30342,571 people
- Pekin Public School District10831,275 people
- East Peoria Community High School District 30924,406 people
- Washington Community High School District 30824,243 people
- Morton Community Unit School District 70919,876 people
- East Peoria School District 8617,222 people
- Olympia Community Unit School District 1610,797 people
- Central School District 5110,657 people
- Eureka Community Unit District 14010,303 people
- Washington School District 527,864 people
- District 50 Schools5,722 people
- Deer Creek-Mackinaw Community Unit School District 7015,527 people
All 23
- Creve Coeur School District 765,306 people
- Tremont Community Unit School District 7025,154 people
- North Pekin-Marquette Heights School District 1025,080 people
- Midwest Central Community Unit School District 1915,009 people
- Illini Central Community Unit School District 1894,543 people
- Rankin Community School District 983,715 people
- Delavan Community Unit School District 7032,392 people
- Robein School District 852,115 people
- South Pekin School District 1371,454 people
- Hartsburg-Emden Community Unit School District 211,397 people
- Spring Lake Community Consolidated School District 606810 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.
- Pekin, Illinois (city)31,781 people
- East Peoria, Illinois (city)22,324 people
- Morton, Illinois (village)16,595 people
- Washington, Illinois (city)15,919 people
- Peoria Heights, Illinois (village)5,825 people
- Creve Coeur, Illinois (village)4,621 people
- Marquette Heights, Illinois (city)2,492 people
- Tremont, Illinois (village)2,366 people
- Mackinaw, Illinois (village)1,979 people
- North Pekin, Illinois (village)1,571 people
- Heritage Lake, Illinois (CDP)1,522 people
- Delavan, Illinois (city)1,489 people
All 19
- Minier, Illinois (village)1,102 people
- Goodfield, Illinois (village)985 people
- South Pekin, Illinois (village)883 people
- Hopedale, Illinois (village)753 people
- Green Valley, Illinois (village)683 people
- Deer Creek, Illinois (village)654 people
- Armington, Illinois (village)343 people
Bordering areas, nearest first
Distances are straight lines between map points.
- Peoria County, Illinois23 mi northwest
- Woodford County, Illinois25 mi northeast
- Logan County, Illinois27 mi south
- Mason County, Illinois28 mi southwest
- McLean County, Illinois35 mi east
- Fulton County, Illinois36 mi west
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.