Market insights · South Carolina
Barnwell County, SC: growth, migration and housing
Barnwell County has 20,653 residents, up 0.3% since 2020 (+0.7% in the last year). In 2022–2023, 416 households moved in and 435 moved out (-19 net), while a net $2.0M of income left. Median household income is $46,626, the median home $106,000 and median rent $740 a month.
In South Carolina: 33rd of 46 counties for 5-year population growth · 42nd of 46 counties for net in-migration (per resident) · 36th of 46 counties for median household income · 38th of 46 counties for median home value.
Where new residents came from
Top counties by households (tax returns) moving to Barnwell County, 2022–2023 (IRS).
| From | Households (tax returns) | Their income (AGI) |
|---|---|---|
| Aiken County, SC | 79 | $3.6M |
| Orangeburg County, SC | 41 | $1.4M |
| Bamberg County, SC | 34 | $1.2M |
Where leavers went
Top counties by households leaving Barnwell County, 2022–2023 (IRS).
| To | Households (tax returns) | Their income (AGI) |
|---|---|---|
| Aiken County, SC | 145 | $7.3M |
| Orangeburg County, SC | 31 | $1.3M |
| Bamberg County, SC | 30 | $1.2M |
| Richland County, SC | 30 | $1.2M |
| Lexington County, SC | 21 | $0.8M |
BizyFi in Barnwell County
No companies in the BizyFi directory are based here yet. Search them on the company map (company names with a free account), or browse South Carolina companies.
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Sources: U.S. Census Bureau population estimates (vintage 2025), American Community Survey 5-year (2024), and IRS Statistics of Income county-to-county migration data (2022–2023). Migration counts are tax returns (roughly households) moving between U.S. counties; the IRS suppresses very small flows. Growth rates, per-1,000 figures, rent share and state ranks are BizyFi calculations. Data updated 2026-10-17. This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.