| County : | Mahaska County |
| State : | Iowa (IA) |
| Land Area : | 570.86 sq mi |
| Water Area : | 2.53 sq mi |
| Latitude : | 41.3307969 |
| Longitude : | -92.6363663 |
| Population (2010): | 22,381 |
| Population Estimate (2012) : | 22,432 |
| Population Density : | 39.21/sq mi |
| Housing Units (2012) : | 9,766 |
| Median Household Income (2012) : | $47,758 (Iowa : $51,129, USA : $53,046) |
| Median Family Income (2012) : | $61,210 (Iowa : $64,772, USA : $64,585) |
| Median House Price (2012) : | $99,100 (Iowa : $123,000, USA : $181,400) |
Mahaska County Cities / Towns
| Barnes City (176) | Beacon City (494) | Eddyville City (1,024) |
| Fremont City (743) | Keomah Village City (84) | Leighton City (162) |
| New Sharon City (1,293) | Oskaloosa City (11,463) | Rose Hill City (168) |
| University Park City (487) |
Mahaska County Zip Codes
| 50027 (285) | 50044 (887) | 50104 (128) |
| 50143 (600) | 50153 (734) | 50207 (2,537) |
| 50219 (13,939) | 50256 (501) | 50268 (993) |
| 52534 (284) | 52543 (291) | 52553 (1,745) |
| 52561 (962) | 52577 (15,055) | 52586 (521) |
| 52595 (416) |