| County : | Riley County |
| State : | Kansas (KS) |
| Land Area : | 609.77 sq mi |
| Water Area : | 12.18 sq mi |
| Latitude : | 39.2912114 |
| Longitude : | -96.7274889 |
| Population (2010): | 71,115 |
| Population Estimate (2012) : | 71,927 |
| Population Density : | 116.63/sq mi |
| Housing Units (2012) : | 28,212 |
| Median Household Income (2012) : | $43,364 (Kansas : $51,273, USA : $53,046) |
| Median Family Income (2012) : | $63,921 (Kansas : $64,731, USA : $64,585) |
| Median House Price (2012) : | $166,900 (Kansas : $127,400, USA : $181,400) |
Riley County Cities / Towns
| Fort Riley (7,761) | Leonardville City (449) | Manhattan City (52,281) |
| Ogden City (2,087) | Randolph City (163) | Riley City (939) |
Riley County Zip Codes
| 66411 (1,292) | 66441 (26,746) | 66442 (14,283) |
| 66449 (846) | 66502 (43,850) | 66503 (13,428) |
| 66506 (3,614) | 66517 (2,087) | 66531 (1,380) |
| 66554 (567) | 66933 (298) | 67432 (6,019) |
| 67447 (320) |