| County : | Mercer County |
| State : | Ohio (OH) |
| Land Area : | 462.45 sq mi |
| Water Area : | 10.98 sq mi |
| Latitude : | 40.5353325 |
| Longitude : | -84.6320588 |
| Population (2010): | 40,814 |
| Population Estimate (2012) : | 40,866 |
| Population Density : | 88.26/sq mi |
| Housing Units (2012) : | 17,633 |
| Median Household Income (2012) : | $52,234 (Ohio : $48,246, USA : $53,046) |
| Median Family Income (2012) : | $63,191 (Ohio : $61,163, USA : $64,585) |
| Median House Price (2012) : | $123,800 (Ohio : $133,700, USA : $181,400) |
Mercer County Cities / Towns
| Burkettsville Village (244) | Celina City (10,400) | Chickasaw Village (290) |
| Coldwater Village (4,427) | Fort Recovery Village (1,430) | Mendon Village (662) |
| Montezuma Village (165) | Rockford Village (1,120) | St. Henry Village (2,427) |
Mercer County Zip Codes
| 45310 (244) | 45822 (18,943) | 45826 (306) |
| 45828 (6,125) | 45846 (4,437) | 45860 (2,274) |
| 45862 (1,507) | 45866 (186) | 45869 (4,534) |
| 45882 (3,004) | 45883 (3,883) | 45885 (12,661) |
| 45887 (4,755) | 45898 (1,314) |