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ZIP Code Database - Facts & Stats

Data Last Updated: May 1, 2022

ZIP Codes for City of Barnwell, SC

Barnwell, SC Covers 1 ZIP Code

ZIP CodeTypeCountyPopulationArea Code(s)
ZIP Code 29812StandardBarnwell11,864803

Timezone(s):Eastern (GMT -05:00)
Population:4,750 (More Details)
Male Population:2,244
Female Population:2,506
Median Age:37
ZIP Codes:1
Area Codes:1
Total Area:557 square miles (county)
Land Area:548 square miles (county)
Water Area:9 square miles (county)

Barnwell, SC Demographic Information *

Total population4,750
Male population2,244
Female population2,506
Median age (years)36.7
White Population2,116
Black Population2,448
Indian Population11
Asian Population72
Hawaiian Population3
Hispanic Population47
Median age (Male)34.1
Median age (Female)38.9
Total households1,934
Family households (families)1,242
Average household size2.39
Average family size2.99
Total housing units2,240
* Demographic data is based on 2010 Census. Products


  1. U.S. Postal Service [Last Updated: 5/1/2022],
  2. Internal Data Creation [Last Updated: 5/1/2022],
  3. U.S. Geological Survey [Updated as needed],
  4. U.S. Census [Updated Yearly],
  5. U.S. Census 2010 [Decennial] [Last Updated: 1/1/2010],