Market insights · South Carolina
Marlboro County, SC: growth, migration and housing
Marlboro County has 25,488 residents, down 3.8% since 2020 (-0.2% in the last year). In 2022–2023, 433 households moved in and 485 moved out (-52 net), while a net $2.1M of income left. Median household income is $34,301, the median home $82,000 and median rent $689 a month.
In South Carolina: 43rd of 46 counties for 5-year population growth · 44th of 46 counties for net in-migration (per resident) · 45th of 46 counties for median household income · 45th of 46 counties for median home value.
Where new residents came from
Top counties by households (tax returns) moving to Marlboro County, 2022–2023 (IRS).
| From | Households (tax returns) | Their income (AGI) |
|---|---|---|
| Chesterfield County, SC | 57 | $1.7M |
| Scotland County, NC | 42 | $1.3M |
| Richmond County, NC | 27 | $0.9M |
| Dillon County, SC | 24 | $0.8M |
| Florence County, SC | 21 | $1.2M |
Where leavers went
Top counties by households leaving Marlboro County, 2022–2023 (IRS).
| To | Households (tax returns) | Their income (AGI) |
|---|---|---|
| Chesterfield County, SC | 63 | $1.8M |
| Florence County, SC | 46 | $1.8M |
| Scotland County, NC | 43 | $1.8M |
| Dillon County, SC | 27 | $0.7M |
| Richmond County, NC | 25 | $0.6M |
| Richland County, SC | 22 | $0.6M |
| Darlington County, SC | 21 | $0.7M |
BizyFi in Marlboro 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.