| County : | Mercer County |
| State : | Missouri (MO) |
| Land Area : | 453.83 sq mi |
| Water Area : | 1.28 sq mi |
| Latitude : | 40.4214135 |
| Longitude : | -93.5676313 |
| Population (2010): | 3,785 |
| Population Estimate (2012) : | 3,763 |
| Population Density : | 8.34/sq mi |
| Housing Units (2012) : | 2,135 |
| Median Household Income (2012) : | $38,125 (Missouri : $47,333, USA : $53,046) |
| Median Family Income (2012) : | $50,313 (Missouri : $59,395, USA : $64,585) |
| Median House Price (2012) : | $72,000 (Missouri : $138,400, USA : $181,400) |
Mercer County Cities / Towns
| Mercer Town (318) | Princeton City (1,166) | Ravanna (98) |
| South Lineville Town (28) |
Mercer County Zip Codes
| 64632 (629) | 64645 (195) | 64661 (916) |
| 64667 (395) | 64673 (2,492) | 64679 (805) |