The St. Louis County Map provides a detailed overview of one of Missouri’s most populous counties, highlighting major cities, towns, transportation routes, and natural features. This map displays important communities including Florissant, Chesterfield, Clayton, Kirkwood, University City, and Ferguson, along with county boundaries and neighboring counties.
Key transportation corridors such as Interstate 44, Interstate 64, Interstate 70, Interstate 270, and Interstate 255 are clearly marked, making the map useful for navigation, planning, and geographic reference. Natural features including the Mississippi River, Missouri River, Creve Coeur Lake, and several state parks are also shown. The map serves as a valuable resource for students, travelers, researchers, and anyone interested in the geography and infrastructure of St. Louis County, Missouri.
| Fact | Details |
|---|---|
| Official Name | St. Louis County |
| State | Missouri |
| Country | United States of America |
| Founded | October 1, 1812 |
| Incorporated | Organized as a county in 1812 |
| Population | Approximately 1,000,000 residents |
| County | Clayton |
| Area | 523 sq mi (1,355 km²) |
| Time Zone | Central Time Zone (CST UTC-6 / CDT UTC-5) |
| ZIP Codes | 630xx–631xx series |
| Area Code | 314, 557, 636 |
| Known For | Gateway region, business centers, historic communities, parks, and St. Louis Lambert International Airport |
| Major Airport | St. Louis Lambert International Airport |
| Climate | Humid Subtropical Climate with hot summers and cool winters |
| Nickname | Gateway County (unofficial) |
| Major Highways | Interstate 44, Interstate 55, Interstate 64, Interstate 70, Interstate 170, Interstate 255, Interstate 270 |
| Nearby Border | Illinois (across the Mississippi River) |
| Major Attractions | Forest Park, St. Louis Zoo, Missouri Botanical Garden, Grant's Farm, Creve Coeur Lake, Castlewood State Park, Laumeier Sculpture Park |