Market insights · South Dakota
Buffalo County, SD: growth, migration and housing
Buffalo County has 1,802 residents, down 6.8% since 2020 (-0.4% in the last year). In 2022–2023, 30 households moved in and 21 moved out (+9 net), bringing in a net $0.5M of income. Median household income is $47,045, the median home $117,800 and median rent $540 a month.
In South Dakota: 66th of 66 counties for 5-year population growth · 4th of 62 counties for net in-migration (per resident) · 62nd of 66 counties for median household income · 56th of 66 counties for median home value.
Where new residents came from
Top counties by households (tax returns) moving to Buffalo County, 2022–2023 (IRS).
The IRS publishes no county-level flows for Buffalo County (it suppresses flows of fewer than 20 households).
Where leavers went
Top counties by households leaving Buffalo County, 2022–2023 (IRS).
The IRS publishes no county-level flows for Buffalo County (it suppresses flows of fewer than 20 households).
BizyFi in Buffalo 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.