Slidell city, Louisiana
Official LSAD Designation: Slidell city • Census GEOID: 2270805
• St. Tammany Parish
Slidell city is an incorporated city in St. Tammany Parish, Louisiana. According to official records from the Census (2025), Slidell city had an estimated population of 28,341 residents. Official Census Bureau geographic records classify this community under LSAD designation Slidell city (GEOID 2270805).
Local Government Administration U.S. Census Bureau GMAF
City Of Slidell
Municipal
Official Title:
Chief Of Staff
Address:
PO BOX 828, SLIDELL LA 70459
Parish Of St Tammany
County
Official Title:
Parish President
Address:
PO BOX 628, COVINGTON LA 70434-0628
Civic & Statistical Snapshot
| Category | Estimate | Survey Period / Source |
|---|---|---|
| Total Population | 28,341 | 2025 |
| Median Household Income | $70,497 | 2020-2024 |
| Median Home Value | $217,700 | 2020-2024 |
| Land Area | 15.22 sq mi | Gazetteer (2026) |
| Civic & Public Services | Hospitals, Libraries, Colleges | CMS / IMLS / IPEDS |
| Schools & Districts | NCES Directory Listings | Provided by k12guides.com |
| Nearby Airports | Landing Facilities | Provided by airport-data.com |
| Climate & Weather | NOAA 30-Year Normals | 1991–2020 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).