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Where am ILOCATED

Marshall County, Illinois

Marshall County, Illinois, has 11,473 residents (July 2025 estimate). Its county seat is Lacon. It uses Central Time and covers 387 sq mi (1,002 km²) of land.

ChicagoAurora
Marshall County in Illinois
HenryLaconTolucaWenonaWashburn
Marshall County and its neighbors (simplified outlines). Open in OpenStreetMap ↗
Resident population, July 2025
11,473
Land area
387 sq mi (1,002 km²)
County seat or government
Lacon
Time zone
Central TimeUTC-06:00 in January; UTC-05:00 in July
Median household income
$71,585 ± $3,594
Median home value
$142,800 ± $8,929
Median rent, with utilities
$782 ± $84
Homes lived in by their owners
79.2% ± 2.0 points
County type
County
Metro or micro area
Peoria, IL metro areaOutlying county
Water area
11.7 sq mi (30.3 km²)
State
Illinois
County code (FIPS)
17123
Coordinates (central point)
41.031119, -89.342371
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 Marshall 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. 6152310,203 people
  2. 615402,753 people
  3. 615372,743 people
  4. 614912,230 people
  5. 617602,226 people
  6. 613691,594 people
  7. 615701,503 people
  8. 613771,441 people
  9. 615651,262 people
  10. 614211,231 people
  11. 615261,105 people
  12. 61375989 people
All 19
  1. 61336694 people
  2. 61560477 people
  3. 61358407 people
  4. 61321224 people
  5. 6154197 people
  6. 6147995 people
  7. 6142420 people

19 ZIP Code areas overlap Marshall 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

Marshall 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 Marshall County, largest first

  1. Henry Township2,542 people
  2. Lacon Township2,322 people
  3. Bennington Township1,641 people
  4. Evans Township1,467 people
  5. Steuben Township1,084 people
  6. Roberts Township875 people
  7. Hopewell Township418 people
  8. Richland Township337 people
  9. La Prairie Township285 people
  10. Saratoga Township256 people
  11. Whitefield Township213 people
  12. Bell Plain Township207 people

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

School districts in Marshall County, largest first

  1. Illinois Valley Central Unit School District 32112,082 people
  2. Fieldcrest Community Unit School District 66,096 people
  3. Putnam County Community Unit School District 5355,133 people
  4. Midland Community Unit School District 74,861 people
  5. Stark County Community Unit School District 1004,249 people
  6. Princeville Community Unit School District 3264,136 people
  7. Henry-Senachwine Consolidated Unit School District 53,410 people
  8. Lowpoint-Washburn Community Unit School District 212,125 people
  9. Bradford Community Unit School District 11,508 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. Henry, Illinois (city)2,441 people
  2. Lacon, Illinois (city)1,916 people
  3. Toluca, Illinois (city)1,477 people
  4. Wenona, Illinois (city)999 people
  5. Washburn, Illinois (village)945 people
  6. Hopewell, Illinois (village)604 people
  7. Varna, Illinois (village)387 people
  8. Sparland, Illinois (village)295 people
  9. La Rose, Illinois (village)97 people

Bordering areas, nearest first

Distances are straight lines between map points.

  1. Putnam County, Illinois12 mi north
  2. Woodford County, Illinois18 mi south
  3. Stark County, Illinois24 mi west
  4. Bureau County, Illinois27 mi north
  5. Peoria County, Illinois28 mi southwest
  6. LaSalle County, Illinois32 mi northeast

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.