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Where am ILOCATED

McDonough County, Illinois

McDonough County, Illinois, has 25,916 residents (July 2025 estimate). Its county seat is Macomb. It uses Central Time and covers 589 sq mi (1,526 km²) of land.

ChicagoAurora
McDonough County in Illinois
MacombBushnellColchesterBlandinsvilleIndustry
McDonough County and its neighbors (simplified outlines). Open in OpenStreetMap ↗
Resident population, July 2025
25,916
Land area
589 sq mi (1,526 km²)
County seat or government
Macomb
Time zone
Central TimeUTC-06:00 in January; UTC-05:00 in July
Median household income
$52,795 ± $2,946
Median home value
$107,500 ± $6,960
Median rent, with utilities
$761 ± $42
Homes lived in by their owners
63.5% ± 2.4 points
County type
County
Metro or micro area
Macomb, IL micro areaCentral county
Water area
0.8 sq mi (2.06 km²)
State
Illinois
County code (FIPS)
17109
Coordinates (central point)
40.455808, -90.678954
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 McDonough 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. 6145517,317 people
  2. 614223,002 people
  3. 623262,236 people
  4. 614501,812 people
  5. 623671,294 people
  6. 61420968 people
  7. 61440744 people
  8. 61438739 people
  9. 61484738 people
  10. 61482492 people
  11. 61470488 people
  12. 61459406 people
All 17
  1. 61411376 people
  2. 62374216 people
  3. 61416204 people
  4. 61475180 people
  5. 61452157 people

17 ZIP Code areas overlap McDonough 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

We don’t have a website for this county yet. The US government’s local-office directory ↗ lists its offices. A geographic lookup cannot determine eligibility, tax liability or a court obligation.

Townships in McDonough County, largest first

  1. Macomb City Township14,894 people
  2. Bushnell Township2,892 people
  3. Colchester Township1,610 people
  4. Emmet Township1,127 people
  5. Blandinsville Township871 people
  6. Industry Township733 people
  7. Lamoine Township596 people
  8. Macomb Township566 people
  9. Sciota Township548 people
  10. Chalmers Township532 people
  11. Walnut Grove Township508 people
  12. Prairie City Township395 people
All 19
  1. Tennessee Township381 people
  2. New Salem Township348 people
  3. Scotland Township337 people
  4. Bethel Township229 people
  5. Mound Township179 people
  6. Hire Township110 people
  7. Eldorado Township64 people

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

School districts in McDonough County, largest first

  1. Macomb Community Unit School District 18517,738 people
  2. Illini West High School District 3077,567 people
  3. Schuyler-Industry Community Unit School District 57,347 people
  4. West Central Community Unit School District 2355,481 people
  5. West Prairie Community Unit School District 1034,435 people
  6. Bushnell-Prairie City Community Unit School District 1703,723 people
  7. Southeastern Community Unit School District 3373,120 people
  8. V.I.T. Community Unit School District 22,206 people
  9. La Harpe Community School District 3472,038 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. Macomb, Illinois (city)14,894 people
  2. Bushnell, Illinois (city)2,677 people
  3. Colchester, Illinois (city)1,128 people
  4. Blandinsville, Illinois (village)666 people
  5. Industry, Illinois (village)569 people
  6. Plymouth, Illinois (village)456 people
  7. Good Hope, Illinois (village)438 people
  8. Prairie City, Illinois (village)378 people
  9. Adair, Illinois (CDP)215 people
  10. Bardolph, Illinois (village)204 people
  11. Tennessee, Illinois (village)160 people
  12. Sciota, Illinois (village)72 people

Bordering areas, nearest first

Distances are straight lines between map points.

  1. Schuyler County, Illinois21 mi south
  2. Fulton County, Illinois25 mi east
  3. Hancock County, Illinois26 mi west
  4. Warren County, Illinois27 mi north
  5. Henderson County, Illinois28 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.