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County ProfileSC

Allendale County

Population: 8,039 · 5 ZIP codes

Demographics

Source: U.S. Census Bureau (ACS/Decennial). Estimates vary by year.

People
Total population
8,039
People
Median age
44.7
Housing
Total households
3,238
Income
Median household income
$32,328
Housing
Total housing units
4,050
Employment
Employment rate
39.9%
Education
Bachelor’s degree or higher
14.3%
Healthcare
Insured population
87.9%
County details
Local time 02:20:08(ET)
NameAllendale
Total ZIP codes5total
ZIP codes (by type)
4 Standard1 PO Box
Area code803, 839
TimezoneEastern Time (ET)
Coordinates32.9797573, -81.3632651
Land area408.1 sq miles(1,057 km²)

Map of Allendale county, South Carolina with ZIP codes

Map of Allendale County, South Carolina and ZIP codes

Cities and Communities in Allendale County

Compare the largest cities in Allendale County by population, median income, and growth. Use the table below to analyze key demographic shifts across the region.

CityPopulation
Median incomeHousehold
ZIP codes
Allendale2,694$23,5291ZIPs
Fairfax1,505$40,6491ZIPs
Martin4121ZIPs
Sycamore1471ZIPs
Ulmer65$90,1921ZIPs

Data unavailable or suppressed by the U.S. Census Bureau for areas with small sample sizes to protect individual privacy.

ZIP Codes in Allendale County

Review the most populated postal areas across Allendale County. Use the ranking below to compare resident density and demographic scales between the county's major zones.

ZIPCity
Median incomeHousehold
Population (ZIP)
29810Allendale$26,8353,896
29827Fairfax$40,8443,547
29836Martin412
29849Ulmer$89,583279
29846Sycamore

Data Sources & Citations

The geographic and demographic information presented on this site is compiled from publicly available, authoritative sources, including:

  • United States Census BureauDemographic, population, housing, and socioeconomic data sourced from Census Bureau datasets, including the Decennial Census and the American Community Survey (ACS).Census Data
  • United States Postal Service (USPS)ZIP code classifications, delivery types, and postal designations used for reference purposes. USPS ZIP codes are intended for mail delivery and may not always align exactly with Census geographic boundaries.USPS