Centralia is a city in Audrain County, Missouri, home to about 4,690 people across 2.9 square miles. Its ZIP code is 65240.
Homes sold for a median of $183 per square foot in the three months ending August 2026, a seller’s market.
Each card is that ZIP code’s whole market, including any part outside Centralia. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Centralia’s story and what everyday life there is like, for people thinking about moving in.
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| Nearest major airport | St. Louis Lambert International Airport (STL)100 miles away |
|---|---|
| Closer regional airport | Columbia Regional Airport (COU)26 miles away |
| Nearest city of 250,000+ | St. Louis, MO109 miles away |
| Nearest city of 1 million+ | Chicago, IL297 miles away |
Straight-line distances from the center of Centralia; driving is longer.
Source: Airports from OurAirports (scheduled passenger service); city centers and populations from the U.S. Census Bureau.
Source: Members of Congress from the congress-legislators project; districts from the Census Bureau’s relationship files; governor and mayor from Wikidata.
Centralia had 4,541 residents in the 2020 census, up 20% since 2000.
It’s the 156th largest of 1,060 towns in Missouri by population.
Audrain County grew from 21,160 residents in 1900 to 24,962 in 2020.
Audrain County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 88°F in summer, and winter lows average 19°F. About 43.6 inches of rain and melted snow fall in a typical year.
Source: NOAA 1991–2020 climate normals, Mexico, MO weather station (14 miles away).
6,259 jobs at 470 businesses in Audrain County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
25 doctors and other health care providers list an office in Centralia.
Nearest hospitals
Providers with an office here
| Primary care doctors | 4 |
|---|---|
| Dentists | 4 |
| Nurse practitioners and physician assistants | 2 |
| Mental health providers | 7 |
| Physical and occupational therapists | 5 |
| Chiropractors | 3 |
| Pharmacies | 1 |
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances; providers from the CMS National Plan and Provider Enumeration System (NPPES), by practice address and primary specialty.
Parks (2 nearby)
Grocery stores (1 nearby)
Libraries (1 nearby)
Museums (1 nearby)
Counts are within about 1.5 miles of the center of town.
Source: Map data © OpenStreetMap contributors (openstreetmap.org/copyright), as mapped by volunteers; it can miss places or include closed ones.
Public schools here are run by Centralia R-Vi. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Chance Elem.Centralia | Pre-K–2 | 370 | Public | 0.8 mi |
| Centralia IntermediateCentralia | 3–5 | 273 | Public | 0.5 mi |
| Chester Boren MiddleCentralia | 6–8 | 302 | Public | 1.3 mi |
| Centralia HighCentralia | 9–12 | 398 | Public | 0.7 mi |
| School | Grades | Students | Affiliation | Distance |
|---|---|---|---|---|
| Sunnydale Sda Elementary SchoolCentralia | K–7 | 24 | Seventh-day Adventist | 4.9 mi |
| Sunnydale Adventist AcademyCentralia | 9–12 | 170 | Seventh-day Adventist | 4.9 mi |
Source: U.S. Department of Education, NCES: Common Core of Data (2024-2025) for public schools; Private School Universe Survey (2023-2024) for private schools. Listed by address; we don’t rate schools.
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Town boundaries don’t always match ZIP codes: a ZIP code can cross into neighboring towns, and a town can share a ZIP code with its neighbors. Facts describe the town itself; market figures describe whole ZIP codes.