Montgomery County Map, Illinois

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

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

Montgomery County Map, Illinois

Montgomery County Map, Illinois

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

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Montgomery County, Illinois

Montgomery County is a county located in the U.S. state of Illinois. It's county seat is Hillsboro. As per 2020 census, the population of Montgomery County is 28084 people and population density is square miles. According to the United States Census Bureau, the county has a total area of 703 sq mi (1,821 km2). Montgomery County was established on 1821.

Facts about Montgomery County, Illinois

CountryUnited States
StateIllinois
RegionSouth Central Illinois
County SeatHillsboro
Named AfterRichard Montgomery
Established1821
Organized1821
Coordinates39.23° N, 89.48° W
Total Area~710 sq mi
Land Area~704 sq mi
Water Area~6 sq mi
Population (2020)~28,134
Population RankMid-sized county in Illinois
Largest CityLitchfield
Main IndustriesAgriculture, Manufacturing, Energy, Healthcare
Major HighwaysInterstate 55, Illinois Route 16, Illinois Route 127
Time ZoneCentral Time (UTC−06:00)
Known ForHistoric Route 66, coal mining heritage, rural farmland
Websitehttps://www.montgomeryco.com

Ctities in Montgomery county

City NameTypePopulation (2020)Pop. DensityArea
PanamaVillage337923.3/sq mi (356.5/km2)0.365 sq mi (0.95 km2)
ButlerVillage164275.2/sq mi (106.2/km2)0.596 sq mi (1.54 km2)
CoaltonVillage317598.1/sq mi (230.9/km2)0.53 sq mi (1.37 km2)
CoffeenCity647557.3/sq mi (215.2/km2)1.161 sq mi (3.01 km2)
FarmersvilleVillage689980.1/sq mi (378.4/km2)0.703 sq mi (1.82 km2)
FillmoreVillage305300.2/sq mi (115.9/km2)1.016 sq mi (2.63 km2)
HillsboroCity5,902714.4/sq mi (275.8/km2)8.262 sq mi (21.4 km2)
IrvingVillage373415.8/sq mi (160.6/km2)0.897 sq mi (2.32 km2)
LitchfieldCity6,605734.8/sq mi (283.7/km2)8.989 sq mi (23.28 km2)
NokomisCity2,1421,698.7/sq mi (655.9/km2)1.261 sq mi (3.27 km2)
OhlmanVillage109338.5/sq mi (130.7/km2)0.322 sq mi (0.83 km2)
RaymondVillage949754.4/sq mi (291.3/km2)1.258 sq mi (3.26 km2)
Schram CityVillage563835.3/sq mi (322.5/km2)0.674 sq mi (1.75 km2)
Taylor SpringsVillage724689.5/sq mi (266.2/km2)1.05 sq mi (2.72 km2)
WaggonerVillage181741.8/sq mi (286.4/km2)0.244 sq mi (0.63 km2)
WalshvilleVillage61237.4/sq mi (91.6/km2)0.257 sq mi (0.67 km2)
WenonahVillage3221.1/sq mi (8.2/km2)1.514 sq mi (3.92 km2)
WittCity785634.6/sq mi (245.0/km2)1.237 sq mi (3.2 km2)
DonnellsonVillage153413.5/sq mi (159.7/km2)0.37 sq mi (0.96 km2)
HarvelVillage178247.9/sq mi (95.7/km2)0.718 sq mi (1.86 km2)

Roads and Highways in Montgomery County, Illinois

Montgomery County is connected by major highways that provide access to central and southwestern Illinois.

  • Interstate 55 – runs north-south through the county, connecting Litchfield to Springfield and St. Louis
  • Illinois Route 16 – runs east-west, linking Litchfield to Hillsboro and Jerseyville
  • Illinois Route 127 – runs north-south, connecting Hillsboro to Greenville and Springfield
  • Illinois Route 185 – runs east-west, linking Hillsboro to Vandalia and Coffeen
  • Illinois Route 138 – runs east-west, connecting Litchfield to Gillespie and Mount Olive

Neighboring Counties of Montgomery County

  • Sangamon County (north)
  • Christian County (east)
  • Fayette County (southeast)
  • Bond County (south)
  • Macoupin County (west)

Top Attractions in Montgomery County, Illinois

Montgomery County offers historic sites, parks, and small-town charm across its communities.

  • Lake Lou Yaeger – A popular destination for boating, fishing, camping, and outdoor recreation.
  • Historic Litchfield Route 66 Sites – Features landmarks and attractions along the famous highway.
  • Montgomery County Courthouse – A historic landmark located in Hillsboro.
  • Beaver Dam State Park (nearby) – Offers hiking, camping, and scenic views.
  • Hillsboro Downtown Square – Features shops, dining, and historic architecture.
  • Shoal Creek Conservation Area – Provides trails and nature viewing opportunities.
  • Montgomery County Fairgrounds – Hosts annual fairs and community events.

Distance from Montgomery County to Nearby Cities

  • Hillsboro to Springfield – 50 mi (80 km)
  • Litchfield to St. Louis – 60 mi (97 km)
  • Hillsboro to Decatur – 65 mi (105 km)
  • Litchfield to Edwardsville – 45 mi (72 km)
  • Hillsboro to Champaign – 110 mi (177 km)

FAQs about Montgomery County

Where is Montgomery County located?

Montgomery County is located in central Illinois, southwest of Springfield.

What is Montgomery County known for?

The county is known for Lake Lou Yaeger, Route 66 attractions, and its small-town communities.

What is the county seat of Montgomery County?

Hillsboro is the county seat and a central city in Montgomery County.

Are there outdoor activities in Montgomery County?

Yes, visitors can enjoy lakes, parks, trails, and outdoor recreation throughout the county.

How can I reach Montgomery County?

Montgomery County is accessible via Interstate 55 and several Illinois state highways.