Bay St. Louis city, Mississippi
Official LSAD Designation: Bay St. Louis city • Census GEOID: 2803980
• Hancock County
Bay St. Louis city is an incorporated city in Hancock County, Mississippi. According to official records from the Census (2025), Bay St. Louis city had an estimated population of 10,634 residents. Official Census Bureau geographic records classify this community under LSAD designation Bay St. Louis city (GEOID 2803980).
Local Government Administration U.S. Census Bureau GMAF
City Of Bay St Louis
Municipal
Official Title:
Mayor
Address:
PO BOX 2550, BAY SAINT LOUIS MS 39521-2550
County Of Hancock
County
Official Title:
Administrative Assistant
Address:
854 HIGHWAY 90, STE A, BAY SAINT LOUIS MS 39520
Civic & Statistical Snapshot
| Category | Estimate | Survey Period / Source |
|---|---|---|
| Total Population | 10,634 | 2025 |
| Median Household Income | $67,442 | 2020-2024 |
| Median Home Value | $260,200 | 2020-2024 |
| Land Area | 14.69 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).