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  3. Clay County, SD
South Dakota (SD)Vermillion605

Clay County, SD

Vermillion metro * 14.4K residents

Compare

14.4K

Population

$56.2K

Median income

per household

$230.1K

Home value

20.8%

Poverty rate

What stands out

  • Median household income: $56.2K (bottom quartile vs US counties).
  • Median home value: $230.1K.
  • Poverty rate: 20.8% (high poverty; top quartile vs US counties).

Categories vs U.S.

Economy

1 of 6 metrics better than U.S. benchmarks

Median household income

$56.2K

U.S.

$81K

Median home value

$230.1K

U.S.

$333K

Poverty rate

20.8%

U.S.

12.4%

Housing stress

Rent-burdened renters (≥30%)

47.1%

U.S.

51.1%

Severely rent-burdened (≥50%)

32.6%

U.S.

25.9%

Affordability Ratios

Rent-to-Income

16.3%

Below 30% threshold

Home-Value-to-Income

4.1×

Upper end of typical range

Income distribution

Share of households by income bracket (ACS).

< $50k
46.1%
$50–100k
28.1%
$100–200k
20.3%
$200k+
5.5%
See Vermillion metro economy →See SD state economy →

Health

4 of 6 available metrics better than U.S.

Obesity

34.7%

U.S.

33.2%

Diabetes

8.1%

U.S.

12.1%

Current smoking

12.4%

U.S.

12.8%

See Vermillion metro health data →See SD state health data →

Connectivity

1 of 3 metrics better than U.S.

Best available speed

1,000Mbps

Gigabit speeds reported

100+ Mbps coverage

75.8%

U.S.

85.3%

Gigabit ready

0.8%

U.S.

8.6%

5G available

98.2%

U.S.

77.4%

See Vermillion metro connectivity →See SD state connectivity →

Map

Clay County, SD

Population

14.4K

Area

412.0 sq mi

Density

35/sq mi

Neighbors

Cedar County, NEDixon County, NELincoln County, SDTurner County, SDUnion County, SDYankton County, SD
Data Sources & Notes

Data freshness

ACS 5-year
2020–2024
CDC PLACES
2025
BLS (LAUS)
2025-12
Broadband
2020-12
Mobile coverage
2025-11-24
Page updated
2026-02-23

Release schedule and upstream dates: Sources.

Data sources

U.S. Census (ACS 5-year)U.S. Census TIGER/LineCDC PLACESBLS (LAUS)FCC (Form 477 broadband)FCC (Mobile Broadband Data Collection)

Derived statistics

  • ACS county metrics (income, housing, demographics) are sourced directly from Census county-level tables.
  • CDC health metrics are sourced from county-level CDC PLACES data.
  • Unemployment is sourced from the BLS Local Area Unemployment Statistics (LAUS) program.
  • Population density is computed as population ÷ land area.

Data accuracy & methodology

County pages use 2020–2024 ACS 5-year county-level estimates sourced directly from Census county tables. CDC health metrics come from county-level CDC PLACES. Unemployment rates come from the BLS LAUS program. Connectivity metrics use FCC coverage data.