Columbia is a city in Monroe County, Illinois, home to about 11,127 people across 10 square miles. Its ZIP code is 62236.
Homes sold for a median of $156 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 Columbia. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Columbia’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)24 miles away |
|---|---|
| Nearest city of 250,000+ | St. Louis, MO14 miles away |
| Nearest city of 1 million+ | Chicago, IL270 miles away |
Straight-line distances from the center of Columbia; 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.
Columbia had 10,999 residents in the 2020 census, up 39% since 2000.
It’s the 208th largest of 1,450 towns in Illinois by population.
Monroe County grew from 13,847 residents in 1900 to 34,962 in 2020.
Monroe County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 89°F in summer, and winter lows average 22°F. About 42.9 inches of rain and melted snow fall in a typical year, with about 14 inches of snow.
Source: NOAA 1991–2020 climate normals, Cahokia, IL weather station (9 miles away).
8,455 jobs at 875 businesses in Monroe County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
111 doctors and other health care providers list an office in Columbia.
Nearest hospitals
Providers with an office here
| Primary care doctors | 6 |
|---|---|
| Specialist doctors | 1 |
| Dentists | 20 |
| Nurse practitioners and physician assistants | 21 |
| Mental health providers | 24 |
| Physical and occupational therapists | 23 |
| Optometrists | 3 |
| Chiropractors | 13 |
| Pharmacies | 6 |
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 (6 nearby)
Grocery stores (1 nearby)
Pharmacies (1 nearby)
Libraries (1 nearby)
Counts are within about 2.5 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.
Established in 1859.
Notable people born here
Source: Wikidata (wikidata.org), the free knowledge base; people are listed by place of birth.
Public schools here are run by Columbia CUSD 4. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Eagleview Elementary SchoolColumbia | Pre-K–1 | 259 | Public | 0.6 mi |
| Parkview Elementary SchoolColumbia | 2–4 | 427 | Public | 1.4 mi |
| Columbia Middle SchoolColumbia | 5–8 | 612 | Public | 1.0 mi |
| Columbia High SchoolColumbia | 9–12 | 606 | Public | 1.2 mi |
| School | Grades | Students | Affiliation | Distance |
|---|---|---|---|---|
| Immaculate ConceptionColumbia | Pre-K–8 | 351 | Roman Catholic | 2.5 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.