Market insights · South Dakota
Custer County, SD: growth, migration and housing
Custer County has 9,431 residents, up 13.2% since 2020 (+1.1% in the last year). In 2022–2023, 411 households moved in and 359 moved out (+52 net), bringing in a net $22.9M of income. Median household income is $84,112, the median home $372,100 and median rent $1,112 a month.
In South Dakota: 3rd of 66 counties for 5-year population growth · 3rd of 62 counties for net in-migration (per resident) · 6th of 66 counties for median household income · 1st of 66 counties for median home value.
Where new residents came from
Top counties by households (tax returns) moving to Custer County, 2022–2023 (IRS).
| From | Households (tax returns) | Their income (AGI) |
|---|---|---|
| Pennington County, SD | 93 | $6.6M |
| Fall River County, SD | 31 | $2.1M |
Where leavers went
Top counties by households leaving Custer County, 2022–2023 (IRS).
| To | Households (tax returns) | Their income (AGI) |
|---|---|---|
| Pennington County, SD | 96 | $6.8M |
| Fall River County, SD | 23 | $1.2M |
BizyFi in Custer 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 Dakota 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.