| City : | St. Marks City |
| County : | Wakulla County |
| State : | Florida (FL) |
| Land Area : | 1.93 sq mi |
| Water Area : | 0.01 sq mi |
| Latitude : | 30.1660639 |
| Longitude : | -84.2083166 |
| Population (2010): | 293 |
| Population Estimate (2012) : | 253 |
| Population Density : | 151.51/sq mi |
| Housing Units (2012) : | 206 |
| Median Household Income (2012) : | $63,750 (Florida : $47,309, USA : $53,046) |
| Median Family Income (2012) : | $59,750 (Florida : $57,128, USA : $64,585) |
| Median House Price (2012) : | $159,600 (Florida : $170,800, USA : $181,400) |
St. Marks City Zip Codes
| 32355 (312) |