| City : | St. Martin Village |
| County : | Brown County |
| State : | Ohio (OH) |
| Land Area : | 1.09 sq mi |
| Water Area : | 0.00 sq mi |
| Latitude : | 39.2148109 |
| Longitude : | -83.8876162 |
| Population (2010): | 129 |
| Population Estimate (2012) : | 256 |
| Population Density : | 118.03/sq mi |
| Housing Units (2012) : | 50 |
| Median Household Income (2012) : | $45,909 (Ohio : $48,246, USA : $53,046) |
| Median Family Income (2012) : | $60,833 (Ohio : $61,163, USA : $64,585) |
| Median House Price (2012) : | $118,000 (Ohio : $133,700, USA : $181,400) |