ZIP code · Barnwell · South Carolina · United States
ZIP code 29812 — Barnwell
ZIP code 29812 serves Barnwell, South Carolina.
- Postal code
- 29812Single source Value from one source, not cross-checked.
- City
- Barnwell
- County
- Barnwell FIPS 45011
- State
- South Carolina
- Country
- United States
- Coordinates
- 33.2335, -81.3523 — precision precise (locality)
View on OpenStreetMap - Population
- 10,965 (ZCTA, ACS 5-year)
- Population density
- 63 / sq mi
- Land area
- 173.5 sq mi (449.3 km²) (ZCTA, ACS 5-year)
- Median household income
- $44,494
- Per-capita income
- $26,034
- Median age
- 40.2
- Households
- 4,182
- Housing units
- 5,061
- Median home value
- $105,100
- Median gross rent
- $656 / month
- Congressional districts
- SC-2 (also SC-6) (119th Congress)
- USDA hardiness zone
- 8b (15 to 20 °F)Planting / growing zone from the 2023 USDA Plant Hardiness Zone Map: average annual extreme minimum temperature, 1991–2020.
- Time zone
- America/New_York (UTC−5 / UTC−4 DST)
Tools: compare 29812 with another ZIP · ZIPs within 25 miles · distance from 29812
Map of ZIP code 29812
Climate — monthly normals
Warmest month Jul (avg high 93°F), coldest Jan (avg low 35°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 59 | 63 | 70 | 78 | 85 | 90 | 93 | 92 | 87 | 78 | 69 | 61 |
| Avg low °F | 35 | 37 | 43 | 50 | 59 | 67 | 71 | 70 | 64 | 53 | 41 | 37 |
| Precip in | 3.8 | 3.9 | 4.2 | 3.1 | 3.6 | 5.5 | 5.6 | 5.3 | 4.3 | 3.1 | 2.8 | 3.8 |
NOAA 1991–2020 climate normals from the nearest station: BARNWELL 5 ENE (6.9 mi) · NOAA NCEI
Places in ZIP 29812
- 2 schools
- 1 colleges & universities
- 3 supermarkets
- 19 restaurants & cafés
- 9 parks
- 3 playgrounds
- 1 gyms & sports centres
- 1 libraries
- 2 post offices
- 41 places of worship
- 4 banks
- 5 gas stations
- 1 EV charging stations
- 10 police & fire stations
Places mapped inside this ZIP’s ZCTA area in OpenStreetMap. OSM is community-maintained: counts reflect what has been mapped, and completeness varies by area — treat them as at-least figures. © OpenStreetMap contributors (ODbL) · Methodology
About this page
US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.
GeoNames · U.S. Census Bureau (ACS) · U.S. Census Bureau · NOAA NCEI · usda-phzm. Data generated on 2026-08-21. Methodology · Report an error on this page