| ZIP Codes: | 18 ZIP Codes (11 Standard, 1 PO Box, 6 Unique) [See All] |
| Area Codes: | 235 / 573 |
| Timezone: | Central (GMT -06:00) |
| Local Time: | 2:12:41 PM |
| Population: | 189,898 [See All] |
| FIPS: | 29019 |
| CBSA: | Columbia, MO |
| Land Area: | 842 sq mi |
| Water Area: | 6 sq mi |
| Coordinates: | 38.9721, -92.3304 |
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189,898 residents live across 18 ZIPs covering 842 sq mi, served by 8 distinct USPS-recognized cities.
Population moved from 170,074 to 189,696 from 2014 to 2024 — a +11.5% change. 10 ZIPs gained residents, 1 lost.
The county's wealthiest ZIP 65039 (Hartsburg, $125,714 median) and poorest ZIP 65201 (Columbia, $48,113) are 11.7 miles apart — a 2.6× income gap across local geography.
Median home values vary 2.1× across this county — from $199,300 in 65240 (Centralia) to $412,400 in 65039 (Hartsburg).
Density varies 23× across the county — from 34 people/sq mi in 65279 (Rocheport) to 787 in 65203 (Columbia).
Educational attainment ranges from 29.2% bachelor's+ in 65284 (Sturgeon) to 64.5% in 65203 (Columbia) — the breadth of educational profiles across the area.
Within Missouri, this is the #8 most populous of 116 counties and ranks #6 for median household income with the #10 fastest decade growth .
Hosts 4 single-entity Unique ZIPs: 65211University Of Missouri ; 65215Stephens College ; 65212Umc Hospital Clinics ; and 65216Columbia College .
Weighted by population, the typical household earns about $71,281 across the county — reflecting what a typical resident sees, not a simple ZIP average.
51.3% of adults age 25+ hold a bachelor's degree or higher (59,519 of 116,021 reporting). The most-educated ZIPs cluster around Columbia.
11 Standard delivery, 1 PO Box only, 6 single-entity Unique ZIPs serve this county.
1 ZIP in this county where more than 60% of adults 25+ hold a bachelor's degree — typically college campuses, research enclaves, or tech corridors.
6 ZIP codes in this county serve a single facility — typically theme parks, universities, large corporations, airports, or government complexes.
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 65203 | Columbia | Standard | 61,539 | $79,960 | 78.2 | 9.3% |
| 65201 | Columbia | Standard | 50,011 | $48,113 | 87.2 | 23.6% |
| 65202 | Columbia | Standard | 47,327 | $72,289 | 143.3 | 0.7% |
| 65240 | Centralia | Standard | 8,830 | $71,707 | 181.3 | 14.3% |
| 65010 | Ashland | Standard | 7,205 | $95,559 | 58.1 | 14.9% |
| 65255 | Hallsville | Standard | 5,216 | $83,900 | 57.0 | 29.6% |
| 65039 | Hartsburg | Standard | 3,076 | $125,714 | 64.0 | 19.4% |
| 65284 | Sturgeon | Standard | 2,316 | $97,434 | 59.8 | 2.7% |
| 65256 | Harrisburg | Standard | 2,011 | $92,061 | 53.8 | 13.8% |
| 65279 | Rocheport | Standard | 1,940 | $103,516 | 57.8 | 35.6% |
| 65215 | Columbia | Unique | 225 | — | 0.0 | -21.3% |
| 65216 | Columbia | Unique | 202 | — | 0.0 | — |
| 65205 | Columbia | PO Box | — | — | 0.0 | — |
| 65299 | Columbia | Standard | — | — | 0.0 | — |
| 65218 | Columbia | Unique | — | — | 0.0 | — |
| 65217 | Columbia | Unique | — | — | 0.0 | — |
| 65211 | Columbia | Unique | — | — | 1.3 | — |
| 65212 | Columbia | Unique | — | — | 0.0 | — |