Minnehaha County, South Dakota

The most populous of South Dakota's 66 counties.

CountyFIPS 46099

Within South Dakota

Minnehaha County, highlighted, with the areas around it. Boundaries generalised from the 2025 Census cartographic boundary file; neighbour fills carry no data. The dot marks Sioux Falls, the county seat, located via the 2025 Census Gazetteer.

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Population: 212,691; +15,003 (+7.6%) since 2020
Land area: 806.9; square miles. A further 0.9% of the total area is water
Population density: 264; people per square mile, computed rather than published
County seat: Sioux Falls; Seat of county government.
Established: 1862; 163 years ago
Largest city: Sioux Falls city; Population 172,103 for the whole place, which extends beyond this county.

Satellite view

Aerial imagery of Minnehaha County with its boundary drawn on top. A map shows you the shape; this shows you what is inside it, and which side of the line a place falls on.

Aerial view of Minnehaha County, South Dakota from the USGS National Map, with its boundary outlined — Imagery: USGS National Map, USGS Imagery Only, public domain, requested from USGS by your browser when you reach this point on the page, at 800 by 596 pixels. The boundary is the 2025 Census cartographic boundary file, reprojected to Web Mercator to match the imagery. You can also open the USGS National Map viewer.

Where Minnehaha County ranks

Position among the 66 counties of South Dakota, and among all 3,144 US counties and county-equivalents. Computed from the figures on this page.

Measure	Value	In South Dakota	Nationally
Population	212,691	1st of 66	338th of 3,144
Land area	806.9 sq mi	40th of 66	1,053rd of 3,144
Population density	264 per sq mi	1st of 66	481st of 3,144
Median household income	$76,880	16th of 66	732nd of 3,143

Full data for Minnehaha County

Every figure below is attributed to the Census Bureau product it came from, with the vintage of that product.
Measure	Value	Source and vintage
Population	212,691	Vintage 2025 Population Estimates
Population in 2020	197,688	Vintage 2025 Population Estimates
2020 estimates base?	197,205	Vintage 2025 Population Estimates
Land area	806.9 sq mi	2025 Gazetteer Files
Water area	7.0 sq mi	2025 Gazetteer Files
Total area	813.9 sq mi	2025 Gazetteer Files
Population density?	264 per sq mi	Computed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income	$76,880	American Community Survey 2020-2024 5-Year Estimates
Median home value	$287,600	American Community Survey 2020-2024 5-Year Estimates
Median age	36.0	American Community Survey 2020-2024 5-Year Estimates
Households	84,814	American Community Survey 2020-2024 5-Year Estimates
Housing units	89,418	American Community Survey 2020-2024 5-Year Estimates

Sources: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026; US Census Bureau, Gazetteer Files, 2025 Gazetteer Files, released 10 September 2025; US Census Bureau, American Community Survey, American Community Survey 2020-2024 5-Year Estimates, released 29 January 2026. Population density is computed here, not published: it divides the Vintage 2025 population estimate by the 2025 Gazetteer land area, which are two different Census products. Retrieved 30 August 2026.

How the population changed

The Census Bureau publishes the components behind an estimate, not just the total. For the year to July 2025:

Births minus deaths: +1,089; 2,760 births, 1,671 deaths
Net migration: +2,167; More people moved in than moved out.

Source: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026. Retrieved 30 August 2026.

The 8 areas bordering Minnehaha County

Ordered by the length of the border actually shared, which the Census Bureau publishes in its county adjacency file and which no other county reference presents.

Bordering area	State	Shared border	Population
Rock County	Minnesota	24 mi	9,524
McCook County	South Dakota	24 mi	5,964
Moody County	South Dakota	22 mi	6,632
Lincoln County	South Dakota	16 mi	77,145
Lake County	South Dakota	12 mi	10,993
Turner County	South Dakota	10 mi	9,314
Lyon County	Iowa	7.3 mi	12,354
Pipestone County	Minnesota	a single point	9,260

Source: US Census Bureau, County Adjacency File, 2025 County Adjacency File, released 15 September 2025. Retrieved 30 August 2026.

All 66 counties of South Dakota

Open the interactive South Dakota county map, or jump straight to any of them.

Data on this page last rebuilt 30 August 2026. How these figures are produced.