Barnwell County, SC Demographics & ZIP Codes

Barnwell County, South Carolina demographics and median household income by ZIP code — 4 ZIP codes — population 21,400 — avg. income $43,586 — avg. home value $95,367. Compare income, housing, and ZIP-level data on US5.

ZIP codes

Population

21,400

Median household income (avg.)

$43,586

58% of U.S. median

Average home value

$95,367

27% of U.S. median

Average rent

$501

43% of U.S. median

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Barnwell County demographics

Barnwell County, South Carolina covers 4 ZIP codes, with a combined ZIP-area population of about 21,400.

Median household income in Barnwell County

The average median household income across ZIP codes in Barnwell County, South Carolina is about $43,586 — about 29% below the SC ZIP average ($61,613), and about 42% below the U.S. median ($75,149).

Among ZIPs with income data, 29817 (Blackville) is near the top at about $47,260, while 29853 (Williston) is near the bottom at about $39,003.

Housing in Barnwell County

For housing in Barnwell County, South Carolina, the average median home value is about $95,367 and the average median rent is about $501.

The most populous ZIP is 29812 (Barnwell) with about 10,965 residents. Use the table below to compare ZIP codes across the county.

ZIP codes in Barnwell County

Sort by population, income, or home value. Click a column header to toggle ascending / descending.

ZIP	City	County	State	Population ↓	Income	Home value
29812	Barnwell	Barnwell County	SC	10,965	$44,494	$105,100
29853	Williston	Barnwell County	SC	6,011	$39,003	$100,800
29817	Blackville	Barnwell County	SC	4,230	$47,260	$80,200
29826	Elko	Barnwell County	SC	194	—	—

Frequently asked questions

What are the demographics of Barnwell County?

Barnwell County, South Carolina has a combined ZIP-area population of about 21,400 across 4 ZIP codes. Browse the ZIP table for population, income, and housing by code.

What is the median household income in Barnwell County?

The average median household income across ZIP codes in Barnwell County, South Carolina is about $43,586, about 29% below the state ZIP average ($61,613), and about 42% below the U.S. median ($75,149). Average median home value is about $95,367. Among ZIPs with data, 29817 (Blackville) is near the top ($47,260) and 29853 (Williston) is near the bottom ($39,003).

How many ZIP codes are in Barnwell County?

Barnwell County, South Carolina includes 4 ZIP codes on US5. Each row links to demographics, median income, and housing for that code.

Where can I find ZIP code demographics for Barnwell County?

This page lists ZIP codes in Barnwell County, South Carolina with population, median household income, and home value. Select a ZIP for a full demographics profile.