| ZIP Codes: | 5 ZIP Codes (4 Standard, 1 PO Box, 0 Unique) [See All] |
| Area Codes: | 803 / 839 |
| Timezone: | Eastern (GMT -05:00) |
| Local Time: | 2:13:39 PM |
| Population: | 19,842 [See All] |
| FIPS: | 45039 |
| CBSA: | Columbia, SC |
| Land Area: | 625 sq mi |
| Water Area: | 25 sq mi |
| Coordinates: | 34.3364, -81.1534 |
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19,842 residents live across 5 ZIPs covering 625 sq mi, served by 5 distinct USPS-recognized cities.
Population moved from 23,106 to 19,842 from 2014 to 2024 — a -14.1% change. 1 ZIPs gained residents, 3 lost.
The county's wealthiest ZIP 29130 (Ridgeway, $63,963 median) and poorest ZIP 29180 (Winnsboro, $43,330) are 15.8 miles apart — a 1.5× income gap across local geography.
Median home values vary 2.7× across this county — from $98,100 in 29065 (Jenkinsville) to $265,500 in 29130 (Ridgeway).
Density varies 4× across the county — from 11 people/sq mi in 29015 (Blair) to 40 in 29130 (Ridgeway).
Educational attainment ranges from 10.7% bachelor's+ in 29015 (Blair) to 19.4% in 29130 (Ridgeway) — the breadth of educational profiles across the area.
Within South Carolina, this is the #39 most populous of 46 counties and ranks #35 for median household income .
Weighted by population, the typical household earns about $50,052 across the county — reflecting what a typical resident sees, not a simple ZIP average.
16.7% of adults age 25+ hold a bachelor's degree or higher (2,481 of 14,888 reporting).
4 Standard delivery, 1 PO Box only, 0 single-entity Unique ZIPs serve this county.
A frontier county — vast land area with only a few residents per square mile. Daily life looks very different here than in the country's denser counties.
Fairfield County lost 14.1% of residents between 2014 and 2024. ZIPs that shed the largest share: