Monroe County Map, Illinois
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Monroe County, Illinois
Monroe County hugs the Mississippi River in southwestern Illinois, just south of St. Louis. It’s a place where bluffs meet bottomlands. The views from atop the river hills are something else.
Waterloo is the county seat. It’s a town with some great German heritage. The county has a mix of farmland and forest. Driving the backroads, you’ll see corn fields one minute and dense woods the next.
There’s history here too. Fort de Chartres is a must-see for history buffs. It showcases Illinois’ French colonial past. The Mississippi River Trail runs through here. It’s great for biking or just taking in the river views. It’s a place that feels a world away from the big city, even though St. Louis is just up the road.
| Category | Details |
|---|---|
| County Name | Monroe County |
| County Seat | Waterloo |
| Population | Approximately 35,000 |
| Cities, Towns, and Communities | Waterloo, Columbia, Red Bud, and several unincorporated communities |
| Interstates and Highways | Interstate 255, U.S. Highway 50, Illinois Route 3 |
| FIPS Code | 17-133 |
| Total Area (Land and Water) | 394 square miles (land: 384 sq mi, water: 10 sq mi) |
| Adjacent Counties (and Direction) | St. Clair County (Northeast), Randolph County (Southeast), Ste. Genevieve County, Missouri (South), Jefferson County, Missouri (West), St. Louis County, Missouri (Northwest) |
| Time Zone | Central Time Zone (CT) |
| State | Illinois |
| Coordinates | 38.2981° N, 90.1520° W |
| Etymology | Named in honor of James Monroe, the 5th President of the United States |
| Major Landmarks | Waterloo Historic District, Monroe County Courthouse, Fort de Chartres State Historic Site |
| Website | Monroe County Website |
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