| ZIP Codes: | 7 ZIP Codes (5 Standard, 1 PO Box, 1 Unique) [See All] |
| Area Codes: | 821 / 864 |
| Timezone: | Eastern (GMT -05:00) |
| Local Time: | 2:13:40 PM |
| Population: | 10,777 [See All] |
| FIPS: | 45065 |
| Land Area: | 398 sq mi |
| Water Area: | 37 sq mi |
| Coordinates: | 33.8336, -82.2664 |
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10,777 residents live across 7 ZIPs covering 398 sq mi, served by 6 distinct USPS-recognized cities.
Population moved from 11,042 to 10,777 from 2014 to 2024 — a -2.4% change. 2 ZIPs gained residents, 5 lost.
The county's wealthiest ZIP 29838 (Modoc, $97,500 median) and poorest ZIP 29840 (Mount Carmel, $43,504) are 27.5 miles apart — a 2.2× income gap across local geography.
Median home values vary 3.0× across this county — from $93,400 in 29840 (Mount Carmel) to $277,800 in 29821 (Clarks Hill).
Density varies 1280× across the county — from 7 people/sq mi in 29840 (Mount Carmel) to 9,479 in 29899 (Mc Cormick).
Educational attainment ranges from 15.3% bachelor's+ in 29821 (Clarks Hill) to 28.6% in 29835 (Mc Cormick) — the breadth of educational profiles across the area.
Within South Carolina, this is the #44 most populous of 46 counties and ranks #13 for median household income .
Hosts 1 single-entity Unique ZIP: 29899Mccormick Correctional Inst .
Weighted by population, the typical household earns about $62,638 across the county — reflecting what a typical resident sees, not a simple ZIP average.
23.7% of adults age 25+ hold a bachelor's degree or higher (2,096 of 8,831 reporting).
5 Standard delivery, 1 PO Box only, 1 single-entity Unique ZIPs serve this county.
One ZIP holds the majority of this county's population — a sign of a county built around a single city or town.
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 29835 | Mc Cormick | Standard | 6,887 | $57,574 | 186.8 | -0.1% |
| 29821 | Clarks Hill | Standard | 1,141 | $81,000 | 60.8 | -8.2% |
| 29845 | Plum Branch | Standard | 837 | $50,673 | 79.4 | -9.3% |
| 29838 | Modoc | Standard | 830 | $97,500 | 35.4 | 58.1% |
| 29899 | Mc Cormick | Unique | 710 | — | 0.1 | -38.4% |
| 29840 | Mount Carmel | Standard | 261 | $43,504 | 35.2 | 36.6% |
| 29844 | Parksville | PO Box | 111 | — | 0.0 | -4.3% |