| County : | Clay County |
| State : | Kansas (KS) |
| Land Area : | 645.30 sq mi |
| Water Area : | 10.30 sq mi |
| Latitude : | 39.3449643 |
| Longitude : | -97.1688527 |
| Population (2010): | 8,535 |
| Population Estimate (2012) : | 8,547 |
| Population Density : | 13.23/sq mi |
| Housing Units (2012) : | 4,042 |
| Median Household Income (2012) : | $43,879 (Kansas : $51,273, USA : $53,046) |
| Median Family Income (2012) : | $56,225 (Kansas : $64,731, USA : $64,585) |
| Median House Price (2012) : | $87,200 (Kansas : $127,400, USA : $181,400) |
Clay County Cities / Towns
| Clay Center City (4,334) | Clifton City (554) | Green City (128) |
| Longford City (79) | Morganville City (192) | Oak Hill City (24) |
| Vining City (45) | Wakefield City (980) |
Clay County Zip Codes
| 66937 (893) | 66962 (264) | 67410 (10,141) |
| 67432 (6,019) | 67447 (320) | 67458 (261) |
| 67466 (774) | 67468 (307) | 67487 (1,422) |