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Where am ILOCATED

St. Clair County, Missouri

St. Clair County, Missouri, has 9,976 residents (July 2025 estimate). Its county seat is Osceola. It uses Central Time and covers 675 sq mi (1,748 km²) of land.

Kansas CitySt. LouisSpringfield
St. Clair County in Missouri
Hickory CountyAppleton CityOsceolaLowry CityRoscoeCollins
St. Clair County and its neighbors (simplified outlines). Open in OpenStreetMap ↗
Resident population, July 2025
9,976
Land area
675 sq mi (1,748 km²)
County seat or government
Osceola
Time zone
Central TimeUTC-06:00 in January; UTC-05:00 in July
Median household income
$53,043 ± $6,049
Median home value
$157,100 ± $9,713
Median rent, with utilities
$622 ± $71
Homes lived in by their owners
76% ± 3.1 points
County type
County
Metro or micro area
Outside any metro or micro areaNext to: Springfield, MO metro area and Kansas City, MO-KS metro area
Water area
27.1 sq mi (70.1 km²)
State
Missouri
County code (FIPS)
29185
Coordinates (central point)
38.042230, -93.776560
Open this point in the location finder

These coordinates mark a central point for the area, not a street address. Income, home value, rent and homes lived in by their owners: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, ± margin at 90% confidence; checked on October 13, 2026.

Time zones in St. Clair County

Time zoneLocal time and UTC offsetNext clock change
Central TimeAmerica/ChicagoUTC-06:00 in January; UTC-05:00 in July. Enable JavaScript for the live clock.Enable JavaScript for upcoming changes.

Near a time-zone line, check where you are with the time-zone finder. Your phone’s setting can differ.

ZIP Code areas, largest first

  1. 6535511,436 people
  2. 647448,242 people
  3. 657856,002 people
  4. 647763,374 people
  5. 656742,896 people
  6. 647241,999 people
  7. 647631,676 people
  8. 647401,469 people
  9. 647381,368 people
  10. 647701,151 people
  11. 65774855 people
  12. 64783607 people
All 16
  1. 64750439 people
  2. 64780364 people
  3. 65735212 people
  4. 6478180 people

16 ZIP Code areas overlap St. Clair County. People counts are 2020–2024 estimates for each whole ZIP area. Mailing ZIPs can differ; check an address with USPS ZIP Code Lookup.

Official county information

We don’t have a website for this county yet. The US government’s local-office directory ↗ lists its offices. A geographic lookup cannot determine eligibility, tax liability or a court obligation.

Townships in St. Clair County, largest first

  1. Osceola Township1,923 people
  2. Butler Township1,553 people
  3. Appleton Township1,390 people
  4. Collins Township963 people
  5. Doyal Township684 people
  6. Roscoe Township499 people
  7. Jackson Township444 people
  8. Speedwell Township395 people
  9. Dallas Township350 people
  10. Monegaw Township334 people
  11. Polk Township288 people
  12. Osage Township249 people
All 16
  1. Washington Township187 people
  2. Center Township137 people
  3. Chalk Level Township119 people
  4. Taber Township72 people

People counts are American Community Survey 2020–2024 5-year estimates. All townships in Missouri, by county

School districts in St. Clair County, largest first

  1. El Dorado Springs R-II School District8,795 people
  2. Humansville R-IV School District3,123 people
  3. Osceola School District2,998 people
  4. Lakeland R-III School District2,922 people
  5. Weaubleau R-III School District2,788 people
  6. Appleton City R-II School District2,151 people
  7. Roscoe C-1 School District591 people

Districts with land in the county; a district can cross county lines. People counts are American Community Survey 2020–2024 5-year estimates. A district boundary doesn’t decide which school a student attends.

Cities, towns and communities, largest first

These areas overlap the mapped boundary; an overlap does not mean that every address belongs to both.

  1. Appleton City, Missouri (city)1,221 people
  2. Osceola, Missouri (city)1,042 people
  3. Lowry City, Missouri (city)618 people
  4. Roscoe, Missouri (village)101 people
  5. Collins, Missouri (village)76 people
  6. Vista, Missouri (village)46 people
  7. Gerster, Missouri (town)7 people

Bordering areas, nearest first

Distances are straight lines between map points.

  1. Cedar County, Missouri22 mi south
  2. Henry County, Missouri24 mi north
  3. Hickory County, Missouri26 mi east
  4. Benton County, Missouri32 mi northeast
  5. Vernon County, Missouri34 mi southwest
  6. Bates County, Missouri34 mi northwest
  7. Polk County, Missouri36 mi southeast

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See this county on Census.gov ↗