| County : | St. Tammany Parish |
| State : | Louisiana (LA) |
| Land Area : | 845.55 sq mi |
| Water Area : | 278.64 sq mi |
| Latitude : | 30.4100224 |
| Longitude : | -89.9519622 |
| Population (2010): | 233,740 |
| Population Estimate (2012) : | 234,283 |
| Population Density : | 276.44/sq mi |
| Housing Units (2012) : | 95,412 |
| Median Household Income (2012) : | $60,813 (Louisiana : $44,673, USA : $53,046) |
| Median Family Income (2012) : | $73,741 (Louisiana : $56,047, USA : $64,585) |
| Median House Price (2012) : | $198,700 (Louisiana : $137,700, USA : $181,400) |
St. Tammany Parish Cities / Towns
| Abita Springs Town (2,365) | Covington City (8,765) | Eden Isle (7,041) |
| Folsom Village (716) | Lacombe (8,679) | Madisonville Town (748) |
| Mandeville City (11,560) | Pearl River Town (2,506) | Slidell City (27,068) |
| Sun Village (470) |
St. Tammany Parish Zip Codes
| 70420 (7,345) | 70427 (20,033) | 70431 (5,366) |
| 70433 (31,133) | 70435 (16,603) | 70437 (7,918) |
| 70445 (10,840) | 70447 (10,150) | 70448 (24,851) |
| 70452 (13,163) | 70458 (35,077) | 70460 (22,096) |
| 70461 (27,818) | 70463 (126) | 70464 (312) |
| 70471 (21,383) |