ZIP Codes of Calhoun County, SC

Population & People
Population & People
Total Population
10,339
Household Income
Household Income
Median Income
$64,854
Housing
Housing
Total Housing Units
5,027
Business & Economy
Business & Economy
Total Businesses
168
Employment
Employment
Employment Rate
51.74%
Education
Education
Bachelor's Degree+
26.38%
Source: U.S. Census ACS 2024 5-Year Estimates · rolled up across the 2 ZIPs in this county.
Data Last Updated: June 1, 2026
ZIP Codes:2 ZIP Codes (2 Standard, 0 PO Box, 0 Unique) [See All]
Area Codes:803 / 839
Timezone:Eastern (GMT -05:00)
Local Time:2:13:38 PM
Population:10,339 [See All]
FIPS:45017
CBSA:Columbia, SC
Land Area:302 sq mi
Water Area:5 sq mi
Coordinates:33.6276, -80.7319
Quick Link:
https://www.zip-codes.com/county/sc-calhoun.asp
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South Carolina's #45 most populous county
10,339 residents across 2 ZIPs — #45 of 46 South Carolina counties.

Standout ZIPs in this County


Most Populous
Saint Matthews · 8,294 people
80.2% of county total
Highest Income
Cameron · $80,313 median
1.2× county average
Largest Land Area
Saint Matthews · 207.5 sq mi
Spans the most ground
Fastest Growth
Saint Matthews · -1.8% (10-yr)
8,442 → 8,294 residents
Most Educated
Cameron · 28.7% bachelor's+
405 of 1,409 adults 25+

Things worth knowing about Calhoun County


10,339 residents live across 2 ZIPs covering 302 sq mi, served by 2 distinct USPS-recognized cities.

Population moved from 10,688 to 10,339 from 2014 to 2024 — a -3.3% change. 0 ZIPs gained residents, 2 lost.

The county's wealthiest ZIP 29030 (Cameron, $80,313 median) and poorest ZIP 29135 (Saint Matthews, $49,396) are 10.1 miles apart — a 1.6× income gap across local geography.

Median home values vary 1.2× across this county — from $167,100 in 29135 (Saint Matthews) to $198,600 in 29030 (Cameron).

Density varies across the county — from 22 people/sq mi in 29030 (Cameron) to 40 in 29135 (Saint Matthews).

Educational attainment ranges from 25.8% bachelor's+ in 29135 (Saint Matthews) to 28.7% in 29030 (Cameron) — the breadth of educational profiles across the area.

Within South Carolina, this is the #45 most populous of 46 counties and ranks #17 for median household income .

Weighted by population, the typical household earns about $55,511 across the county — reflecting what a typical resident sees, not a simple ZIP average.

26.4% of adults age 25+ hold a bachelor's degree or higher (2,011 of 7,624 reporting).

2 Standard delivery, 0 PO Box only, 0 single-entity Unique ZIPs serve this county.

Stories about Calhoun County


Single-ZIP anchor

One ZIP holds the majority of this county's population — a sign of a county built around a single city or town.

Saint Matthews

All ZIP Codes in Calhoun County


ZIPCityTypePopulationMedian IncomeArea (sq mi)10-yr Growth
29135Saint MatthewsStandard8,294$49,396207.5-1.8%
29030CameronStandard2,045$80,31394.6-8.9%

Adjacent & Nearby Counties