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Where am ILOCATED

Knox County, Illinois

Knox County, Illinois, has 47,767 residents (July 2025 estimate). Its county seat is Galesburg. It uses Central Time and covers 716 sq mi (1,855 km²) of land.

ChicagoAurora
Knox County in Illinois
Peoria CountyStark CountyWarren CountyGalesburgAbingdonKnoxvilleOak RunOneida
Knox County and its neighbors (simplified outlines). Open in OpenStreetMap ↗
Resident population, July 2025
47,767
Land area
716 sq mi (1,855 km²)
County seat or government
Galesburg
Time zone
Central TimeUTC-06:00 in January; UTC-05:00 in July
Median household income
$57,030 ± $3,310
Median home value
$111,900 ± $4,687
Median rent, with utilities
$788 ± $45
Homes lived in by their owners
70.8% ± 1.9 points
County type
County
Metro or micro area
Galesburg, IL micro areaCentral county
Water area
3.44 sq mi (8.91 km²)
State
Illinois
County code (FIPS)
17095
Coordinates (central point)
40.930945, -90.213792
Open this point in the location finder

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 Knox County

Time zoneLocal time and UTC offsetNext clock change
Central TimeAmerica/ChicagoUTC-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

  1. 6140130,580 people
  2. 614483,947 people
  3. 614103,838 people
  4. 615313,007 people
  5. 614342,971 people
  6. 615292,763 people
  7. 614021,623 people
  8. 614281,278 people
  9. 614671,159 people
  10. 614881,084 people
  11. 614901,035 people
  12. 61489820 people
All 23
  1. 61544784 people
  2. 61436745 people
  3. 61572732 people
  4. 61430713 people
  5. 61414696 people
  6. 61458656 people
  7. 61472453 people
  8. 61485417 people
  9. 61449339 people
  10. 61439299 people
  11. 61474221 people

23 ZIP Code areas overlap Knox 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

Knox 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 Knox County, largest first

  1. Galesburg City Township29,481 people
  2. Knox Township4,871 people
  3. Cedar Township2,993 people
  4. Indian Point Township1,796 people
  5. Henderson Township1,627 people
  6. Persifer Township1,190 people
  7. Ontario Township1,037 people
  8. Sparta Township908 people
  9. Truro Township772 people
  10. Walnut Grove Township707 people
  11. Salem Township667 people
  12. Orange Township566 people
All 21
  1. Copley Township441 people
  2. Haw Creek Township370 people
  3. Maquon Township360 people
  4. Rio Township343 people
  5. Victoria Township260 people
  6. Galesburg Township226 people
  7. Elba Township190 people
  8. Chestnut Township166 people
  9. Lynn Township75 people

People counts are American Community Survey 2020–2024 5-year estimates. All townships in Illinois, by county

School districts in Knox County, largest first

  1. Galesburg Community Unit School District 20532,619 people
  2. Farmington Central Community Unit School District 2657,710 people
  3. United Community School District 3045,900 people
  4. Knoxville Community Unit School District 2025,806 people
  5. Abingdon-Avon Community Unit School District 2765,724 people
  6. Stark County Community Unit School District 1004,249 people
  7. ROWVA Community Unit School District 2083,480 people
  8. Galva Community Unit School District 2243,194 people
  9. Spoon River Valley Community Unit School District 41,971 people
  10. Williamsfield Community Unit School District 2101,932 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.

  1. Galesburg, Illinois (city)29,481 people
  2. Abingdon, Illinois (city)3,443 people
  3. Knoxville, Illinois (city)3,211 people
  4. Oak Run, Illinois (CDP)800 people
  5. Oneida, Illinois (city)719 people
  6. East Galesburg, Illinois (village)713 people
  7. Wataga, Illinois (village)710 people
  8. Williamsfield, Illinois (village)531 people
  9. Yates City, Illinois (village)500 people
  10. Altona, Illinois (village)498 people
  11. London Mills, Illinois (village)328 people
  12. Henderson, Illinois (village)284 people
All 17
  1. Victoria, Illinois (village)254 people
  2. Rio, Illinois (village)205 people
  3. Maquon, Illinois (village)161 people
  4. Gilson, Illinois (CDP)120 people
  5. St. Augustine, Illinois (village)92 people

Bordering areas, nearest first

Distances are straight lines between map points.

  1. Warren County, Illinois22 mi west
  2. Stark County, Illinois25 mi northeast
  3. Peoria County, Illinois25 mi southeast
  4. Henry County, Illinois29 mi north
  5. Fulton County, Illinois32 mi south
  6. Mercer County, Illinois33 mi northwest

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.

See this county on Census.gov ↗

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.