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Market insights · South Dakota

Clark County, SD: growth, migration and housing

Clark County has 4,031 residents, up 4.7% since 2020 (+0.8% in the last year). In 2022–2023, 43 households moved in and 90 moved out (-47 net), while a net $2.4M of income left. Median household income is $70,726, the median home $158,400 and median rent $782 a month.

Population (2025)4,031
5-year growth+4.7%
1-year growth+0.8%
Net households moving in-47
Per 1,000 residents-11.7
Net income moving in-$2.4M
Median household income$70,726
Median home value$158,400
Median rent$782/mo
Rent as share of income13%

In South Dakota: 13th of 66 counties for 5-year population growth · 61st of 62 counties for net in-migration (per resident) · 37th of 66 counties for median household income · 40th of 66 counties for median home value.

Where new residents came from

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

The IRS publishes no county-level flows for Clark County (it suppresses flows of fewer than 20 households).

Where leavers went

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

ToHouseholds (tax returns)Their income (AGI)
Codington County, SD22$0.8M

BizyFi in Clark 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.