| County : | St. Martin Parish |
| State : | Louisiana (LA) |
| Land Area : | 737.64 sq mi |
| Water Area : | 78.84 sq mi |
| Latitude : | 30.1214329 |
| Longitude : | -91.6114814 |
| Population (2010): | 52,160 |
| Population Estimate (2012) : | 52,343 |
| Population Density : | 70.71/sq mi |
| Housing Units (2012) : | 21,941 |
| Median Household Income (2012) : | $41,137 (Louisiana : $44,673, USA : $53,046) |
| Median Family Income (2012) : | $51,572 (Louisiana : $56,047, USA : $64,585) |
| Median House Price (2012) : | $91,200 (Louisiana : $137,700, USA : $181,400) |
St. Martin Parish Cities / Towns
| Arnaudville Town (1,057) | Breaux Bridge City (8,139) | Broussard City (8,197) |
| Cade (1,723) | Catahoula (1,094) | Cecilia (1,980) |
| Henderson Town (1,674) | Parks Village (653) | St. Martinville City (6,114) |
St. Martin Parish Zip Codes
| 70339 (6,033) | 70380 (22,928) | 70392 (8,456) |
| 70512 (9,780) | 70517 (26,500) | 70518 (12,297) |
| 70519 (222) | 70582 (19,781) | 70757 (3,177) |