| ZIP Codes: | 17 ZIP Codes (14 Standard, 3 PO Box, 0 Unique) [See All] |
| Area Codes: | 803 / 839 |
| Timezone: | Eastern (GMT -05:00) |
| Local Time: | 2:13:40 PM |
| Population: | 314,008 [See All] |
| FIPS: | 45063 |
| CBSA: | Columbia, SC |
| Land Area: | 1,000 sq mi |
| Water Area: | 66 sq mi |
| Coordinates: | 33.9382, -81.1995 |
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314,008 residents live across 17 ZIPs covering 1,000 sq mi, served by 11 distinct USPS-recognized cities.
Population moved from 276,199 to 314,008 from 2014 to 2024 — a +13.7% change. 10 ZIPs gained residents, 4 lost.
The county's wealthiest ZIP 29036 (Chapin, $113,986 median) and poorest ZIP 29006 (Batesburg, $50,379) are 20.7 miles apart — a 2.3× income gap across local geography.
Median home values vary 3.3× across this county — from $126,300 in 29053 (Gaston) to $410,700 in 29036 (Chapin).
Density varies 30× across the county — from 60 people/sq mi in 29160 (Swansea) to 1,781 in 29169 (West Columbia).
Most of the decade's growth concentrated around Lexington — top growth ZIPs averaged +33.6% over the past ten years ( 29036 , 29072 and 29073 ).
Educational attainment ranges from 12.4% bachelor's+ in 29053 (Gaston) to 50.5% in 29036 (Chapin) — the breadth of educational profiles across the area.
Within South Carolina, this is the #6 most populous of 46 counties and ranks #7 for median household income with the #11 fastest decade growth .
Weighted by population, the typical household earns about $81,167 across the county — reflecting what a typical resident sees, not a simple ZIP average.
34.1% of adults age 25+ hold a bachelor's degree or higher (74,524 of 218,545 reporting).
14 Standard delivery, 3 PO Box only, 0 single-entity Unique ZIPs serve this county.
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 29072 | Lexington | Standard | 69,407 | $106,382 | 86.8 | 32.2% |
| 29073 | Lexington | Standard | 53,156 | $77,229 | 82.6 | 27.3% |
| 29212 | Columbia | Standard | 27,657 | $77,142 | 32.9 | -4.8% |
| 29036 | Chapin | Standard | 26,620 | $113,986 | 71.8 | 41.2% |
| 29169 | West Columbia | Standard | 21,647 | $57,122 | 12.2 | -4.2% |
| 29170 | West Columbia | Standard | 21,247 | $74,902 | 25.0 | 1.5% |
| 29053 | Gaston | Standard | 21,076 | $56,703 | 81.5 | 12.0% |
| 29070 | Leesville | Standard | 15,657 | $65,865 | 173.1 | 4.4% |
| 29033 | Cayce | Standard | 12,837 | $61,237 | 10.9 | 6.8% |
| 29054 | Gilbert | Standard | 11,174 | $91,099 | 63.5 | 16.1% |
| 29006 | Batesburg | Standard | 9,199 | $50,379 | 143.1 | 0.1% |
| 29172 | West Columbia | Standard | 8,974 | $64,430 | 23.8 | 0.2% |
| 29123 | Pelion | Standard | 7,938 | $59,317 | 69.0 | -3.2% |
| 29160 | Swansea | Standard | 7,419 | $61,964 | 124.1 | -14.8% |
| 29171 | West Columbia | PO Box | — | — | 0.0 | — |
| 29071 | Lexington | PO Box | — | — | 0.0 | — |
| 29228 | Columbia | PO Box | — | — | 0.0 | — |