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Market insights · South Carolina

Allendale County, SC: growth, migration and housing

Allendale County has 7,355 residents, down 7.4% since 2020 (-2.3% in the last year). In 2022–2023, 177 households moved in and 177 moved out (0 net), while a net $1.9M of income left. Median household income is $32,328, the median home $76,200 and median rent $662 a month.

Population (2025)7,355
5-year growth-7.4%
1-year growth-2.3%
Net households moving in0
Per 1,000 residents0.0
Net income moving in-$1.9M
Median household income$32,328
Median home value$76,200
Median rent$662/mo
Rent as share of income25%

In South Carolina: 46th of 46 counties for 5-year population growth · 38th of 46 counties for net in-migration (per resident) · 46th of 46 counties for median household income · 46th of 46 counties for median home value.

Where new residents came from

Top counties by households (tax returns) moving to Allendale County, 2022–2023 (IRS).

FromHouseholds (tax returns)Their income (AGI)
Hampton County, SC32$0.9M

Where leavers went

Top counties by households leaving Allendale County, 2022–2023 (IRS).

ToHouseholds (tax returns)Their income (AGI)
Aiken County, SC22$0.9M

BizyFi in Allendale 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.