Market insights · South Carolina
Marion County, SC: growth, migration and housing
Marion County has 28,242 residents, down 2.9% since 2020 (-0.9% in the last year). In 2022–2023, 629 households moved in and 630 moved out (-1 net), bringing in a net $1.0M of income. Median household income is $36,301, the median home $93,200 and median rent $669 a month.
In South Carolina: 41st of 46 counties for 5-year population growth · 39th of 46 counties for net in-migration (per resident) · 44th of 46 counties for median household income · 43rd of 46 counties for median home value.
Where new residents came from
Top counties by households (tax returns) moving to Marion County, 2022–2023 (IRS).
| From | Households (tax returns) | Their income (AGI) |
|---|---|---|
| Horry County, SC | 174 | $7.4M |
| Dillon County, SC | 76 | $2.6M |
| Florence County, SC | 70 | $2.2M |
Where leavers went
Top counties by households leaving Marion County, 2022–2023 (IRS).
| To | Households (tax returns) | Their income (AGI) |
|---|---|---|
| Horry County, SC | 122 | $4.3M |
| Florence County, SC | 108 | $4.1M |
| Dillon County, SC | 83 | $2.4M |
| Richland County, SC | 31 | $1.0M |
| Darlington County, SC | 20 | $1.0M |
BizyFi in Marion 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.