| County : | Oregon County |
| State : | Missouri (MO) |
| Land Area : | 789.79 sq mi |
| Water Area : | 1.75 sq mi |
| Latitude : | 36.6848672 |
| Longitude : | -91.4029021 |
| Population (2010): | 10,881 |
| Population Estimate (2012) : | 10,885 |
| Population Density : | 13.78/sq mi |
| Housing Units (2012) : | 5,486 |
| Median Household Income (2012) : | $26,926 (Missouri : $47,333, USA : $53,046) |
| Median Family Income (2012) : | $36,298 (Missouri : $59,395, USA : $64,585) |
| Median House Price (2012) : | $71,700 (Missouri : $138,400, USA : $181,400) |
Oregon County Cities / Towns
| Alton City (871) | Koshkonong Town (212) | Thayer City (2,243) |
| Thomasville (68) |
Oregon County Zip Codes
| 63935 (10,158) | 63941 (371) | 63942 (652) |
| 65438 (2,980) | 65588 (2,680) | 65606 (3,613) |
| 65690 (298) | 65692 (1,332) | 65775 (24,908) |
| 65778 (524) | 65788 (422) | 65791 (4,585) |