| County : | Lyon County |
| State : | Kansas (KS) |
| Land Area : | 847.47 sq mi |
| Water Area : | 7.94 sq mi |
| Latitude : | 38.4554978 |
| Longitude : | -96.1615888 |
| Population (2010): | 33,690 |
| Population Estimate (2012) : | 34,103 |
| Population Density : | 39.75/sq mi |
| Housing Units (2012) : | 15,237 |
| Median Household Income (2012) : | $38,877 (Kansas : $51,273, USA : $53,046) |
| Median Family Income (2012) : | $51,627 (Kansas : $64,731, USA : $64,585) |
| Median House Price (2012) : | $92,700 (Kansas : $127,400, USA : $181,400) |
Lyon County Cities / Towns
| Admire City (156) | Allen City (177) | Americus City (894) |
| Bushong City (34) | Emporia City (24,916) | Hartford City (371) |
| Neosho Rapids City (265) | Olpe City (546) | Reading City (231) |
Lyon County Zip Codes
| 66413 (1,802) | 66523 (3,833) | 66801 (28,492) |
| 66830 (262) | 66833 (536) | 66835 (1,360) |
| 66846 (3,504) | 66854 (816) | 66860 (1,258) |
| 66864 (456) | 66865 (1,124) | 66868 (764) |