| Name | Marshall County |
| Place Type | County |
| Located in | Illinois, United States |
| Coordinates (lat, lon) | 41.0333691, -89.3667553 |
| Population | 12,846 |
| Elevation | 203 m |
| USGS GNIS FeatureID | 424260 |
| Histopolis Place ID | 955376441 |
| |
| Border Colors: | Marshall County | Illinois |
|
4 Cities, 5 Villages, 9 Unincorporated Places (u.p.) (Unincoporated Place (u.p.) is assumed unless noted)