Mandeville city, Louisiana
Official LSAD Designation: Mandeville city • Census GEOID: 2248225
• St. Tammany Parish
Demographics & Population Profile
Population and demographics for Mandeville city.
| Demographic Variable | Estimate / Count | Margin of Error | Period | Source |
|---|---|---|---|---|
| Total Population (2025 PEP Estimate) | 12,918 | — | 2025 | Census |
| Median Age | 43.7 yrs | ±3.2 | 2020-2024 | Census ACS 5-Year 2024 |
| Total Households | 5,582 | ±329 | 2020-2024 | Census ACS 5-Year 2024 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).