Market insights · South Carolina
Union County, SC: growth, migration and housing
Union County has 26,799 residents, down 1.4% since 2020 (+0.0% in the last year). In 2022–2023, 455 households moved in and 402 moved out (+53 net), bringing in a net $5.1M of income. Median household income is $41,621, the median home $103,600 and median rent $804 a month.
In South Carolina: 37th of 46 counties for 5-year population growth · 29th of 46 counties for net in-migration (per resident) · 43rd of 46 counties for median household income · 41st of 46 counties for median home value.
Where new residents came from
Top counties by households (tax returns) moving to Union County, 2022–2023 (IRS).
| From | Households (tax returns) | Their income (AGI) |
|---|---|---|
| Spartanburg County, SC | 163 | $6.5M |
| Greenville County, SC | 34 | $1.3M |
| Cherokee County, SC | 28 | $1.1M |
| York County, SC | 24 | $1.8M |
Where leavers went
Top counties by households leaving Union County, 2022–2023 (IRS).
| To | Households (tax returns) | Their income (AGI) |
|---|---|---|
| Spartanburg County, SC | 178 | $6.7M |
| Cherokee County, SC | 27 | $0.9M |
| Greenville County, SC | 24 | $1.3M |
BizyFi in Union 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.