Map of Jefferson County - Jefferson County is a county located in the U.S. state of Illinois. Jefferson County Map showing cities, highways, important places and water bodies. Get Where is Jefferson County located in the map, major cities in Jefferson county, population, areas, and places of interest.
Jefferson County Map, Illinois
About Jefferson County Map, Illinois: The map showing the county boundary, county seat, major cities, highways, water bodies and neighbouring counties.
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Jefferson County, Illinois
Jefferson County is a county located in the U.S. state of Illinois. It's county seat is Mount Vernon. As per 2020 census, the population of Jefferson County is 36877 people and population density is square miles. According to the United States Census Bureau, the county has a total area of 571 sq mi (1,479 km2). Jefferson County was established on 1819.
Facts about Jefferson County, Illinois
| Country | United States |
| State | Illinois |
| Region | Southern Illinois |
| County Seat | Mount Vernon |
| Named After | Thomas Jefferson |
| Established | 1819 |
| Organized | 1819 |
| Coordinates | 38.30° N, 88.92° W |
| Total Area | ~572 sq mi |
| Land Area | ~571 sq mi |
| Water Area | ~1 sq mi |
| Population (2020) | ~38,827 |
| Population Rank | Mid-sized county in Illinois |
| Largest City | Mount Vernon |
| Main Industries | Healthcare, Manufacturing, Retail, Transportation |
| Major Highways | Interstate 57, Interstate 64 |
| Time Zone | Central Time (UTC−06:00) |
| Known For | Transportation crossroads, healthcare hub, nearby Rend Lake recreation |
| Website | https://www.jeffersoncountyillinois.com |
Ctities in Jefferson county
| City Name | Type | Population (2020) | Pop. Density | Area |
|---|---|---|---|---|
| Belle Rive | Village | 309 | 301.2/sq mi (116.3/km2) | 1.026 sq mi (2.66 km2) |
| Bluford | Village | 630 | 403.6/sq mi (155.8/km2) | 1.561 sq mi (4.04 km2) |
| Bonnie | Village | 374 | 293.3/sq mi (113.3/km2) | 1.275 sq mi (3.3 km2) |
| Dix | Village | 469 | 226.1/sq mi (87.3/km2) | 2.074 sq mi (5.37 km2) |
| Ina | Village | 1,641 | 682.3/sq mi (263.4/km2) | 2.405 sq mi (6.23 km2) |
| Mount Vernon | City | 14,600 | 1,001.2/sq mi (386.6/km2) | 14.583 sq mi (37.77 km2) |
| Nason | City | 199 | 218.4/sq mi (84.3/km2) | 0.911 sq mi (2.36 km2) |
| Waltonville | Village | 408 | 329.0/sq mi (127.0/km2) | 1.24 sq mi (3.21 km2) |
| Woodlawn | Village | 617 | 724.2/sq mi (279.6/km2) | 0.852 sq mi (2.21 km2) |
| Centralia | City | 12,182 | 1,485.6/sq mi (573.6/km2) | 8.2 sq mi (21.24 km2) |
Roads and Highways in Jefferson County, Illinois
Jefferson County is well-connected by major highways that provide easy access to southern Illinois and regional transportation routes.
- Interstate 57 – runs north-south through the county, connecting Mount Vernon to Marion and Effingham
- Interstate 64 – runs east-west through the county, linking Mount Vernon to St. Louis and Evansville
- U.S. Route 51 – runs north-south, connecting Mount Vernon to Centralia and Marion
- Illinois Route 15 – runs east-west, linking Mount Vernon to Fairfield and Nashville
- Illinois Route 37 – runs north-south, connecting Mount Vernon to Salem and Benton
Neighboring Counties of Jefferson County
- Marion County (north)
- Wayne County (east)
- Hamilton County (southeast)
- Franklin County (south)
- Perry County (west)
- Washington County (northwest)
Top Attractions in Jefferson County, Illinois
Jefferson County offers a mix of outdoor recreation, local history, and community attractions centered around Mount Vernon.
- Cedarhurst Center for the Arts – A major cultural destination with galleries, sculptures, and events.
- Rend Lake (nearby) – A popular spot for boating, fishing, camping, and outdoor recreation.
- Jefferson County Historical Village – Showcases historic buildings and local heritage.
- Veterans Memorial Park – A peaceful park honoring military service members.
- Mount Vernon Downtown Area – Features shops, dining, and community events.
- Lincoln Park – A local park with trails, playgrounds, and picnic areas.
- King City Square Shopping Area – A regional shopping and dining destination.
Distance from Jefferson County to Nearby Cities
- Mount Vernon to Marion – 25 mi (40 km)
- Mount Vernon to Carbondale – 50 mi (80 km)
- Mount Vernon to Evansville – 80 mi (129 km)
- Mount Vernon to St. Louis – 80 mi (129 km)
- Mount Vernon to Effingham – 60 mi (97 km)
FAQs about Jefferson County
Jefferson County is located in southern Illinois, centered around the city of Mount Vernon.
The county is known for its highway crossroads, cultural attractions, and nearby outdoor recreation areas.
Mount Vernon is the county seat and the largest city in Jefferson County.
Yes, visitors can enjoy parks, lakes, trails, and recreational areas throughout the county.
Jefferson County is accessible via Interstates 57 and 64, along with several U.S. and state highways.
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