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St. Clair, MO
City in Franklin County, Missouri.
Population
4,789
Land area
4.8sq mi
People per sq mi
994
ZIP codes
0
St. Clair and its ZIP codes
St. Clair at a glance
- St. Clair is about 11 times as dense as Missouri as a whole.
- It is the 152nd most populous of 1,062 cities and towns in Missouri.
- Households here earn a median of $41,820 a year, 41% less than the Missouri figure of $70,702.
- A typical owner-occupied home is valued at $157,700 (32% below Missouri) and median rent is $1,011 a month.
Local data for St. Clair, MO
Counts from official public data
Housing and community stats
St. Clair, MO, American Community Survey 2020-2024
Median household income
$41,820
Poverty rate
15.1%
Median home value
$157,700
Median rent
$1,011/mo
Homeownership
56.0%
Bachelor's or higher
9.5%
Median age
37.6
Average commute
29.4 min
Largest reported origins and ancestries: German Americans (1,035), Irish Americans (715), French Americans (128).
Economy and federal money
Jobs, pay, income and spending are for Franklin County. PPP loans are for St. Clair.
Unemployment rate
3.6%
Aug 2026, -0.3 pts in a year
Average annual pay
$53,591
39,757 jobs, 2025
Income per person
$59,071
BEA, 2024
Federal spending
$733M
FY 2026, $7,002 per person
How people get to work
St. Clair, MO, workers 16 and older. American Community Survey 5-year estimates
- Drove alone66.4%
- Carpooled24.9%
- Public transit0.0%
- Walked1.1%
- Bicycle0.0%
- Taxi, ride-hailing, motorcycle or other0.0%
- Worked from home7.6%
Average one-way commute: 29.4 minutes for people who do not work from home.
Environment and hazard risk
St. Clair, MO, from FEMA, NOAA and EPA
Natural hazard risk
Relatively Moderate
Top: strong wind
Storm events since 1996
721
Countywide, mostly hail
Flood insurance policies
156
0.3% of homes, county
July high / Jan low
91° / 23°F
45.0 inches of rain a year
Hazards, floods and storm historyCheck a flood zone2 historic places
Health statistics
Share of adults in St. Clair, MO, CDC PLACES estimates
Obesity
43.6%
U.S. 33.3% +10.3 pts
Diabetes
13.4%
U.S. 12.1% +1.3 pts
Smoking
23.3%
U.S. 12.8% +10.5 pts
Uninsured (18-64)
11.8%
U.S. 11.1% +0.7 pts
Cities near St. Clair
| Name | Distance | Land area (sq mi) |
|---|---|---|
| ParkwayVillage | 1.1 mi | 0.5 |
| Lake St. ClairCensus-designated place | 1.6 mi | 0.7 |
| UnionCity | 6.7 mi | 9.1 |
| CharmwoodTown | 7.5 mi | 0.1 |
| StantonCensus-designated place | 8.2 mi | 3.3 |
| Miramiguoa ParkVillage | 8.7 mi | 0.4 |
| Villa RidgeCensus-designated place | 10 mi | 4.9 |
| Oak Grove VillageVillage | 12 mi | 0.6 |
| Gray SummitCensus-designated place | 13 mi | 7.7 |
| SullivanCity | 13 mi | 8.2 |
| LeslieVillage | 14 mi | 0.2 |
| WashingtonCity | 15 mi | 10 |
| PacificCity | 15 mi | 6.9 |
| West SullivanTown | 15 mi | 0.4 |
| AugustaTown | 16 mi | 0.9 |
| Lake TekakwithaVillage | 16 mi | 0.2 |
Frequently asked questions
- What county is St. Clair, MO in?
- St. Clair is in Franklin County, Missouri.
- What is the population of St. Clair, MO?
- About 4,789 people live in St. Clair, based on American Community Survey 5-year estimates.
- What cities are near St. Clair?
- Nearby places include Parkway (1.1 mi), Lake St. Clair (1.6 mi), Union (6.7 mi), Charmwood (7.5 mi), Stanton (8.2 mi).
Source: U.S. Census Bureau (TIGER/Line boundaries, American Community Survey) · Data as of 12/31/2023