| County : | Franklin County |
| State : | Illinois (IL) |
| Land Area : | 408.89 sq mi |
| Water Area : | 22.55 sq mi |
| Latitude : | 37.9918483 |
| Longitude : | -88.9262457 |
| Population (2010): | 39,561 |
| Population Estimate (2012) : | 39,518 |
| Population Density : | 96.75/sq mi |
| Housing Units (2012) : | 18,525 |
| Median Household Income (2012) : | $37,158 (Illinois : $56,853, USA : $53,046) |
| Median Family Income (2012) : | $47,840 (Illinois : $70,144, USA : $64,585) |
| Median House Price (2012) : | $63,900 (Illinois : $190,800, USA : $181,400) |
Franklin County Cities / Towns
| Benton City (7,087) | Buckner Village (462) | Christopher City (2,382) |
| Ewing Village (307) | Freeman Spur Village (287) | Hanaford Village (327) |
| Macedonia Village (63) | Mulkeytown (175) | North City Village (608) |
| Orient City (358) | Royalton Village (1,151) | Sesser City (1,931) |
| Thompsonville Village (543) | Valier Village (669) | West City Village (661) |
| West Frankfort City (8,182) | Zeigler City (1,801) |
Franklin County Zip Codes
| 62812 (11,265) | 62819 (448) | 62822 (2,574) |
| 62825 (203) | 62836 (801) | 62856 (324) |
| 62860 (524) | 62865 (2,018) | 62874 (372) |
| 62883 (591) | 62884 (2,940) | 62890 (2,882) |
| 62891 (652) | 62896 (12,626) | 62897 (398) |
| 62983 (1,504) | 62999 (1,829) |