St. Clair city, Missouri
Official LSAD Designation: St. Clair city • Census GEOID: 2964136
• Franklin County
St. Clair city is an incorporated city in Franklin County, Missouri. According to official records from the Census (2025), St. Clair city had an estimated population of 4,813 residents. Official Census Bureau geographic records classify this community under LSAD designation St. Clair city (GEOID 2964136).
Local Government Administration U.S. Census Bureau GMAF
City Of St Clair
Municipal
Official Title:
City Clerk
Address:
1 PAUL PARKS DR, SAINT CLAIR MO 63077-1139
County Of Franklin
County
Official Title:
Franklin County Auditor
Address:
400 E LOCUST ST, RM 201, UNION MO 63084-1863
Civic & Statistical Snapshot
| Category | Estimate | Survey Period / Source |
|---|---|---|
| Total Population | 4,813 | 2025 |
| Median Household Income | $41,820 | 2020-2024 |
| Median Home Value | $157,700 | 2020-2024 |
| Land Area | 4.82 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).