Logan County, Illinois
Logan County, Illinois, has 27,182 residents (July 2025 estimate). Its county seat is Lincoln. It uses Central Time and covers 618 sq mi (1,601 km²) of land.
- Resident population, July 2025
- 27,182
- Land area
- 618 sq mi (1,601 km²)
- County seat or government
- Lincoln
- Time zone
- Central TimeUTC-06:00 in January; UTC-05:00 in July
- Median household income
- $66,358 ± $2,759
- Median home value
- $134,400 ± $6,443
- Median rent, with utilities
- $829 ± $18
- Homes lived in by their owners
- 68.5% ± 2.5 points
- County type
- County
- Metro or micro area
- Lincoln, IL micro areaCentral county
- Water area
- 0.87 sq mi (2.26 km²)
- State
- Illinois
- County code (FIPS)
- 17107
- Coordinates (central point)
- 40.129277, -89.365309
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 Logan 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
- 6265618,234 people
- 626133,598 people
- 625482,090 people
- 617232,005 people
- 626931,677 people
- 626341,263 people
- 617541,131 people
- 62643797 people
- 62682684 people
- 62635661 people
- 61749653 people
- 61721552 people
All 20
20 ZIP Code areas overlap Logan 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
Logan 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 Logan County, largest first
- East Lincoln Township7,677 people
- West Lincoln Township7,335 people
- Broadwell Township3,071 people
- Mount Pulaski Township1,950 people
- Atlanta Township1,846 people
- Orvil Township1,181 people
- Aetna Township641 people
- Hurlbut Township625 people
- Chester Township508 people
- Laenna Township505 people
- Corwin Township452 people
- Elkhart Township435 people
All 17
- Sheridan Township430 people
- Prairie Creek Township365 people
- Oran Township346 people
- Eminence Township258 people
- Lake Fork Township88 people
People counts are American Community Survey 2020–2024 5-year estimates. All townships in Illinois, by county
School districts in Logan County, largest first
- Lincoln Community High School District 40419,952 people
- Lincoln Elementary School District 2711,790 people
- Clinton Community Unit School District 1511,385 people
- Olympia Community Unit School District 1610,797 people
- Williamsville Community Unit School District 157,650 people
- Warrensburg-Latham Community Unit District 116,427 people
- Athens Community Unit School District 2135,529 people
- Illini Central Community Unit School District 1894,543 people
- West Lincoln-Broadwell Elementary School District 924,483 people
- Mount Pulaski Community Unit District 233,581 people
- Chester-East Lincoln Community CSD 612,849 people
- Delavan Community Unit School District 7032,392 people
All 15
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.
- Lincoln, Illinois (city)13,281 people
- Atlanta, Illinois (city)1,580 people
- Mount Pulaski, Illinois (city)1,507 people
- San Jose, Illinois (village)557 people
- Elkhart, Illinois (village)533 people
- Hartsburg, Illinois (village)415 people
- Emden, Illinois (village)387 people
- Chestnut, Illinois (CDP)347 people
- Latham, Illinois (village)297 people
- Middletown, Illinois (village)249 people
- Broadwell, Illinois (village)248 people
- New Holland, Illinois (village)216 people
All 14
- Beason, Illinois (CDP)142 people
- Cornland, Illinois (CDP)24 people
Bordering areas, nearest first
Distances are straight lines between map points.
- Menard County, Illinois24 mi west
- De Witt County, Illinois25 mi east
- Tazewell County, Illinois27 mi north
- Macon County, Illinois28 mi southeast
- Mason County, Illinois30 mi west
- Sangamon County, Illinois30 mi southwest
- McLean County, Illinois37 mi northeast
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