| County : | Marshall County |
| State : | Kentucky (KY) |
| Land Area : | 301.25 sq mi |
| Water Area : | 38.92 sq mi |
| Latitude : | 36.8820170 |
| Longitude : | -88.3327524 |
| Population (2010): | 31,448 |
| Population Estimate (2012) : | 31,393 |
| Population Density : | 104.39/sq mi |
| Housing Units (2012) : | 15,748 |
| Median Household Income (2012) : | $44,802 (Kentucky : $42,610, USA : $53,046) |
| Median Family Income (2012) : | $56,520 (Kentucky : $53,833, USA : $64,585) |
| Median House Price (2012) : | $103,300 (Kentucky : $120,000, USA : $181,400) |
Marshall County Cities / Towns
| Benton City (4,349) | Calvert City (2,566) | Gilbertsville (458) |
| Hardin City (615) |
Marshall County Zip Codes
| 42025 (19,305) | 42029 (6,321) | 42044 (3,404) |
| 42048 (2,147) | 42054 (984) | 42066 (23,182) |
| 42082 (1,845) |