Marshall County Map, Illinois

Written and Fact-checked by | Updated On: April 26, 2026 | 14:30 ET

Map of McDonough County - McDonough County is a county located in the U.S. state of Illinois. McDonough County Map showing cities, highways, important places and water bodies. Get Where is McDonough County located in the map, major cities in McDonough county, population, areas, and places of interest.

Marshall County Map, Illinois

Marshall County Map, Illinois

About McDonough County Map, Illinois: The map showing the county boundary, county seat, major cities, highways, water bodies and neighbouring counties.

Most Viewed Illinois Links

Illinois MapIllinois County MapIllinois Cities Map
Illinois Zip codesAirports in IllinoisWhere is Springfield
Illinois Area CodesIllinois Blank MapIllinois River Map
Illinois Physical MapIllinois Road MapWhere is Chicago

Marshall County, Illinois

Marshall County is a county located in the U.S. state of Illinois. It's county seat is Lacon. As per 2020 census, the population of Marshall County is 11663 people and population density is square miles. According to the United States Census Bureau, the county has a total area of 386 sq mi (1,000 km2). Marshall County was established on 1839.

Facts about Marshall County, Illinois

CountryUnited States
StateIllinois
RegionCentral Illinois
County SeatLacon
Named AfterJohn Marshall
Established1839
Organized1839
Coordinates41.03° N, 89.35° W
Total Area~387 sq mi
Land Area~386 sq mi
Water Area~1 sq mi
Population (2020)~11,844
Population RankSmall county in Illinois
Largest CityLacon
Main IndustriesAgriculture, Manufacturing, Tourism
Major HighwaysIllinois Route 17, Illinois Route 89
Time ZoneCentral Time (UTC−06:00)
Known ForIllinois River bluffs, scenic views, rural heritage
Websitehttps://www.marshallcountyil.gov

Ctities in Marshall county

City NameTypePopulation (2020)Pop. DensityArea
HenryCity2,3201,291.0/sq mi (498.5/km2)1.797 sq mi (4.65 km2)
HopewellVillage421370.9/sq mi (143.2/km2)1.135 sq mi (2.94 km2)
LaconCity1,8781,173.8/sq mi (453.2/km2)1.6 sq mi (4.14 km2)
La RoseVillage98384.3/sq mi (148.4/km2)0.255 sq mi (0.66 km2)
SparlandVillage366639.9/sq mi (247.1/km2)0.572 sq mi (1.48 km2)
TolucaCity1,3401,261.8/sq mi (487.2/km2)1.062 sq mi (2.75 km2)
VarnaVillage3751,262.6/sq mi (487.5/km2)0.297 sq mi (0.77 km2)
WenonaCity9741,323.4/sq mi (511.0/km2)0.736 sq mi (1.91 km2)
WashburnVillage1,0321,433.3/sq mi (553.4/km2)0.72 sq mi (1.86 km2)

Roads and Highways in Marshall County, Illinois

Marshall County is served by key highways that connect it to central Illinois and the Illinois River region.

  • Illinois Route 17 – runs east-west through the county, connecting Lacon to Streator and Wenona
  • Illinois Route 26 – runs north-south, linking Lacon to Peoria and Princeton
  • Illinois Route 29 – runs along the Illinois River, connecting Henry to Chillicothe and Peoria
  • Illinois Route 18 – runs east-west, linking the county to Putnam and Stark counties

Neighboring Counties of Marshall County

  • Putnam County (north)
  • LaSalle County (east)
  • Woodford County (south)
  • Peoria County (southwest)
  • Stark County (west)

Top Attractions in Marshall County, Illinois

Marshall County offers scenic river views, small-town charm, and outdoor recreation along the Illinois River.

  • Marshall State Fish and Wildlife Area – A popular destination for fishing, hunting, and wildlife viewing.
  • Illinois River Area – Provides scenic views, boating, and fishing opportunities.
  • Lacon Riverfront Park – A relaxing spot with river views and picnic areas.
  • Marshall County Courthouse – A historic landmark located in Lacon.
  • Henry Riverfront – Offers scenic overlooks and outdoor activities.
  • Sparland Park – A community park with open space and recreational facilities.
  • Marshall County Fairgrounds – Hosts local fairs and events.

Distance from Marshall County to Nearby Cities

  • Lacon to Peoria – 25 mi (40 km)
  • Lacon to Bloomington – 60 mi (97 km)
  • Lacon to Chicago – 130 mi (209 km)
  • Lacon to Rockford – 110 mi (177 km)
  • Lacon to Springfield – 90 mi (145 km)

FAQs about Marshall County

Where is Marshall County located?

Marshall County is located in central Illinois along the Illinois River.

What is Marshall County known for?

The county is known for its riverfront scenery, wildlife areas, and quiet rural communities.

What is the county seat of Marshall County?

Lacon is the county seat and main community in Marshall County.

Are there outdoor activities in Marshall County?

Yes, visitors can enjoy fishing, boating, parks, and outdoor recreation throughout the county.

How can I reach Marshall County?

Marshall County is accessible via Illinois Routes 17, 26, 29, and 18.