Market insights · South Carolina
Williamsburg County, SC: growth, migration and housing
Williamsburg County has 29,662 residents, down 4.0% since 2020 (-0.5% in the last year). In 2022–2023, 590 households moved in and 589 moved out (+1 net), while a net $1.2M of income left. Median household income is $46,213, the median home $104,500 and median rent $765 a month.
In South Carolina: 44th of 46 counties for 5-year population growth · 37th of 46 counties for net in-migration (per resident) · 38th of 46 counties for median household income · 40th of 46 counties for median home value.
Where new residents came from
Top counties by households (tax returns) moving to Williamsburg County, 2022–2023 (IRS).
| From | Households (tax returns) | Their income (AGI) |
|---|---|---|
| Florence County, SC | 130 | $4.0M |
| Georgetown County, SC | 84 | $3.4M |
| Horry County, SC | 44 | $1.7M |
| Berkeley County, SC | 38 | $1.7M |
| Richland County, SC | 34 | $1.1M |
| Clarendon County, SC | 20 | $0.8M |
Where leavers went
Top counties by households leaving Williamsburg County, 2022–2023 (IRS).
| To | Households (tax returns) | Their income (AGI) |
|---|---|---|
| Florence County, SC | 170 | $5.2M |
| Georgetown County, SC | 91 | $4.2M |
| Richland County, SC | 39 | $1.2M |
| Horry County, SC | 38 | $1.2M |
| Clarendon County, SC | 25 | $1.2M |
| Berkeley County, SC | 23 | $0.9M |
| Greenville County, SC | 21 | $0.7M |
BizyFi in Williamsburg County
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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.