Market insights · South Dakota
McCook County, SD: growth, migration and housing
McCook County has 5,964 residents, up 5.2% since 2020 (+1.4% in the last year). In 2022–2023, 125 households moved in and 169 moved out (-44 net), while a net $3.1M of income left. Median household income is $83,852, the median home $230,100 and median rent $945 a month.
In South Dakota: 12th of 66 counties for 5-year population growth · 57th of 62 counties for net in-migration (per resident) · 7th of 66 counties for median household income · 14th of 66 counties for median home value.
Where new residents came from
Top counties by households (tax returns) moving to McCook County, 2022–2023 (IRS).
| From | Households (tax returns) | Their income (AGI) |
|---|---|---|
| Minnehaha County, SD | 57 | $3.4M |
Where leavers went
Top counties by households leaving McCook County, 2022–2023 (IRS).
| To | Households (tax returns) | Their income (AGI) |
|---|---|---|
| Minnehaha County, SD | 67 | $3.8M |
| Lincoln County, SD | 22 | $1.3M |
BizyFi in McCook 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.