Statistics for St. Tammany Parish
Latest official figures for St. Tammany Parish, each linked to its source.
Demography
| Population | 279,108 persons | 2025 |
| Median age | 40.5 years | 2024 |
| Live births, July to June | 2,731 count | 2025 |
| Deaths, July to June | 2,644 count | 2025 |
| Crude birth rate, July to June | 9.81 per 1,000 inhabitants | 2025 |
| Crude death rate, July to June | 9.5 per 1,000 inhabitants | 2025 |
Labor market
| Unemployment rate | 3.4 % | 2026-08 |
Income and living conditions
| Poverty rate (US official measure) | 10.2 % | 2024 |
| Median household income | 81,202 USD | 2024 |
Economy
| Gross domestic product (GDP), US dollars | 17,382.4 USD million | 2024 |
| Real GDP growth | 2.1 % | 2024 |