| Median Room: | $600 |
| Median Foreclosure: | $177,900 |
| Median For Sale: | $135,000 |
| Median Land: | $24,000 |
| Median Rental: | $600 |
| Population | 272 |
| Square Miles | 1.93 |
| Population Density | 141.01 |
| Median Age | 43 |
| Median Household Income | $25,156 |
| Per Capita Income | $14,994 |
| Median Rent | $298 |
| Percent Renters | 25% |
| Median St. Marks, FL Rental Price: | $600 |
| 1 Bedroom Rental Median Price: | $600 |
| Median St. Marks, FL For Sale Price: | $135,000 |
| 2 Bedroom For Sale Median Price: | $135,000 |
| 3 Bedroom For Sale Median Price: | $100,000 |
| 4 Bedroom For Sale Median Price: | $155,000 |