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U.S. Census Bureau · 2025 Population Estimates Program (PEP)

South Dakota County Population — 2025 PEP

July 1, 2025 resident population estimates for 66 counties. State total (sum of these county estimates): 935,094 persons.

Separate 2025 TIGER/Line county boundaries validate county identity; these are not ACS 2024 survey estimates.

Official Vintage 2025 county identities and unsimplified TIGER coordinates; separate-period ACS housing is joined only by exact full GEOID. Original 2020 counts require separately evidenced compatible geography; incompatible observations remain null with reasons. The revised April estimates base is not an original census count; no boundary allocation is invented.

Source and downloads

2025 Census PEP county estimates, 2020–2025 series; counts are persons, migration counts are persons, published rates are per 1,000, and unavailable values remain null (not zero). 2020 rates are unavailable for the partial-year interval. County totals and characteristics are verified against the pinned raw Census CSV receipts and independent 2025 county geometry.

Official Census PEP county source · Download JSON · Download CSV · Download source metadata

Official state totals and county summaries

Official NST July 1, 2025 state total: 935,094 persons (SUMLEV 040, PEP Vintage 2025). County sum: 935,094 persons; comparison status: equal.

Official NST July 2020: 887,808 persons; July 2020–July 2025 change: +47,286 persons; growth: 5.326152 percent (denominator: official July 2020 population).

County July 2024–July 2025: Growing: 43 · Shrinking: 23 · Unchanged: 0 · Missing: 0. Median county growth: 0.206464 percent.

Largest county: Minnehaha County (GEOID 46099): 212691 persons.

Fastest county growth: Mellette County (GEOID 46095): 4.294778 percent.

Greatest numeric increase: Minnehaha County (GEOID 46099): 3275 persons.

no minimum population; missing excluded per measure; median of county percentages, not population weighted; equal values use ascending full GEOID.

Official state demographics

Resident population · SUMLEV 040 · July 1, 2025 · Census PEP Vintage 2025. Denominator for every share: 935,094 resident persons. Six exclusive race groups; Hispanic origin overlaps race and must not be added to it. Release: June 2026; exact day unproved; PEP estimates have no ACS sampling MOE.

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Official state age, sex, race and overlapping Hispanic origin
MeasureCountShare
Female463,457 persons49.562611 percent
Male471,637 persons50.437389 percent
Ages 18–2490,160 persons9.641811 percent
Ages 25–44235,728 persons25.209016 percent
Ages 45–64207,982 persons22.241828 percent
Ages 65 and older181,082 persons19.365112 percent
Under 18220,142 persons23.542232 percent
American Indian or Alaska Native alone83,977 persons8.980594 percent
Asian alone17,406 persons1.861417 percent
Black or African American alone24,442 persons2.613855 percent
Native Hawaiian or other Pacific Islander alone1,102 persons0.117849 percent
Two or more races38,894 persons4.159368 percent
White alone769,273 persons82.266916 percent
Hispanic (any race)57,148 persons6.111471 percent
Not Hispanic877,946 persons93.888529 percent

Official state median age: 38.4 years. Published state SYASEX median age; not a county aggregation, not ACS.

Download all state demographic observations (CSV)

Revised April 1, 2020 estimates base (official NST): 886,656 persons; county base sum: 886,656 persons; comparison: equal. This is not the original decennial census count.

Original April 1, 2020 Census count: 66 compatible counties; 0 unavailable. Published Census county centers-of-population POPULATION, original 2020 Gazetteer and official 2020–2025 geographic-change evidence; no boundary allocation. Original count, revised April estimates base and July 2020 estimate are separate observations. Documentation: November 2021; exact file release day unproved; retrieval is not release. Official original count source. Original 2020 Gazetteer identity plus Census geographic-change notes 2014–2025; no county-level change recorded from 2020 onward, exact full modern name, and original count required. Any recorded county-level change or referenced counterparty is conservatively unavailable, including unresolved internal redistricting. Same GEOID alone is insufficient. Not a claim of identical cartographic coordinates; no invented allocations.

Source release date unavailable: retained pins do not attest an official release date; retrieval is not release. Reference dates and Vintage 2025 are explicit; no current-vintage refresh is implied.

County population and demographic explorer

Choose a measure, observation year and county without downloading boundaries. Rankings, search, trends and CSV work without a map. Load map explicitly to download the full, unsimplified 2025 TIGER boundaries; this defers rather than removes their payload. The table remains available without JavaScript.

PEP population · persons · July 1, 2025. Denominator: none. Calculation/source: CO POPESTIMATEy. Vintage 2025; null with metric_status reason; measured zero remains zero; no imputation.

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After loading, Tab to a county and press Enter or Space; colors and the legend indicate signed direction and magnitude. Outlines show selection. The county picker works before and after map loading.

Selected county demographic breakdown

July 1, 2025 · Minnehaha County (GEOID 46099). Same-period county population is the share denominator. Hispanic origin overlaps race; do not add origin to race counts. Other overlapping classifications are not additive. Official county median age is from PEP AGESEX MEDIAN_AGE_TOT, not ACS.

County demographics: counts, shares and official median age
Classification / sourceCount or statisticShare / status
Sex · PEP male107,761 persons50.665519 percent
Sex · PEP female104,930 persons49.334481 percent
Age bands · PEP under1851,925 persons24.413351 percent
Age bands · PEP age18 2418,527 persons8.710759 percent
Age bands · PEP age25 4461,887 persons29.097141 percent
Age bands · PEP age45 6447,553 persons22.357787 percent
Age bands · PEP age65plus32,799 persons15.420963 percent
Race alone (partition) · PEP white alone176,144 persons82.816856 percent
Race alone (partition) · PEP black alone14,360 persons6.751579 percent
Race alone (partition) · PEP aian alone7,663 persons3.602879 percent
Race alone (partition) · PEP asian alone5,131 persons2.412420 percent
Race alone (partition) · PEP nhpi alone283 persons0.133057 percent
Race alone (partition) · PEP two or more9,110 persons4.283209 percent
Hispanic origin (overlaps race) · PEP hispanic any race17,330 persons8.147971 percent
Hispanic origin (overlaps race) · PEP not hispanic195,361 persons91.852029 percent
Other overlapping classifications (not additive) · PEP white alone or combination184,810 persons86.891312 percent
Other overlapping classifications (not additive) · PEP not hispanic white alone163,082 persons76.675553 percent
Official county median age · AGESEX MEDIAN_AGE_TOT36.4 yearsNot a share; not ACS or an average of county medians

Use Ctrl/Command or Shift to select multiple counties. The following trend uses exact resident persons, not percentages; county size affects the scale. Missing observations break lines; the revised April estimates base is a separate dashed partial interval.

2025 county population rankings

All 66 county estimates are present without JavaScript, ranked by 2025 population (largest first). Signed changes compare July 1, 2024 to July 1, 2025. Unavailable is not zero; equal values break ties by GEOID (ascending).

Showing all 66 counties; ranked by 2025 population, descending.

South Dakota County Population — 2025 PEP — July 1, 2025; rank reflects the selected ordering
RankCountyGEOIDPopulation (persons)Signed change (persons)Signed change (percent)
1Minnehaha County46099212,691+3275 persons+1.563873%
2Pennington County46103116,792+480 persons+0.412683%
3Lincoln County4608377,145+2022 persons+2.691586%
4Brookings County4601137,635+821 persons+2.230130%
5Brown County4601337,561-60 persons-0.159485%
6Meade County4609330,711-164 persons-0.531174%
7Codington County4602929,562+292 persons+0.997608%
8Lawrence County4608129,459+750 persons+2.612421%
9Yankton County4613523,635+58 persons+0.246002%
10Davison County4603520,069+79 persons+0.395198%
11Beadle County4600519,624+102 persons+0.522487%
12Hughes County4606517,570+13 persons+0.074045%
13Union County4612717,402+29 persons+0.166926%
14Clay County4602715,031-159 persons-1.046741%
15Oglala Lakota County4610213,338-78 persons-0.581395%
16Lake County4607910,993-51 persons-0.461789%
17Butte County4601910,856-29 persons-0.266422%
18Roberts County4610910,255-23 persons-0.223779%
19Custer County460339,431+107 persons+1.147576%
20Turner County461259,314+77 persons+0.833604%
21Charles Mix County460239,303+27 persons+0.291074%
22Todd County461218,863-50 persons-0.560978%
23Grant County460517,534-79 persons-1.037699%
24Fall River County460477,467+54 persons+0.728450%
25Hutchinson County460677,413+12 persons+0.162140%
26Bon Homme County460097,244+93 persons+1.300517%
27Hamlin County460576,900+170 persons+2.526003%
28Moody County461016,632+33 persons+0.500076%
29Spink County461156,155+1 persons+0.016250%
30McCook County460875,964+83 persons+1.411325%
31Tripp County461235,708-30 persons-0.522830%
32Day County460375,484+37 persons+0.679273%
33Dewey County460415,419+37 persons+0.687477%
34Kingsbury County460775,284+4 persons+0.075758%
35Brule County460155,278-19 persons-0.358694%
36Walworth County461295,217-27 persons-0.514874%
37Marshall County460914,426-9 persons-0.202931%
38Deuel County460394,408+32 persons+0.731261%
39Gregory County460534,037-34 persons-0.835176%
40Clark County460254,031+31 persons+0.775000%
41Edmunds County460454,022-9 persons-0.223270%
42Corson County460313,781+4 persons+0.105904%
43Lyman County460853,694+2 persons+0.054171%
44Hanson County460613,456-45 persons-1.285347%
45Bennett County460073,307+1 persons+0.030248%
46Hand County460593,121+3 persons+0.096216%
47Stanley County461173,018+17 persons+0.566478%
48Douglas County460432,888+20 persons+0.697350%
49Perkins County461052,853+20 persons+0.705965%
50Aurora County460032,801+10 persons+0.358295%
51Jackson County460712,666-50 persons-1.840943%
52Ziebach County461372,389+8 persons+0.335993%
53Sanborn County461112,388+11 persons+0.462768%
54Potter County461072,377-24 persons-0.999584%
55McPherson County460892,347+15 persons+0.643225%
56Miner County460972,281+2 persons+0.087758%
57Faulk County460492,178-2 persons-0.091743%
58Mellette County460952,137+88 persons+4.294778%
59Buffalo County460171,802-7 persons-0.386954%
60Haakon County460551,802-22 persons-1.206140%
61Jerauld County460731,654-21 persons-1.253731%
62Sully County461191,479+6 persons+0.407332%
63Campbell County460211,377+34 persons+2.531646%
64Harding County460631,331+19 persons+1.448171%
65Hyde County460691,191-18 persons-1.488834%
66Jones County46075913+15 persons+1.670379%

County population trend · 2020–2025

Resident population (persons), not ACS housing. April 1, 2020 estimates base is distinct from the July 1, 2020 estimate. The April–July 2020 change is partial-year; the July 2020–July 2021 interval is the first July-to-July comparison. No 2020 annual rate is shown. Missing observations are unavailable, never zero.

Showing Minnehaha County (GEOID 46099). Select a county on the map or in the rankings table to update this trend.

Horizontal axis: year (2020–2025); vertical axis: resident population (persons). The 2020 base is a separate April 1 observation; July 1 estimates run from 2020 through 2025. Focus the chart viewport and use Left/Right arrows to scroll on narrow screens. Complete axis labels stay here outside the scrolling chart; the table gives exact values and availability.

Population observations for Minnehaha County (GEOID 46099), persons
DatePopulation (persons)Interval
April 1, 2020 base197,205Estimates base; not July 1
July 1, 2020197,688April–July partial-year; no annual rate
July 1, 2021199,894July 2020–July 2021 comparison
July 1, 2022203,516July-to-July estimate
July 1, 2023206,220July-to-July estimate
July 1, 2024209,416July-to-July estimate
July 1, 2025212,691July-to-July estimate

County population and median home value · different vintages

Each point pairs a county’s PEP July 1, 2025 resident population (persons) with its ACS 2024 5-year median owner-occupied home value (B25077, U.S. dollars). These are different reference periods and different statistical programs. This descriptive comparison does not imply causality or matched vintages. Suppressed, missing or invalid ACS estimates are unavailable, not zero and not plotted. A valid zero remains zero.

The exact-value table below works without JavaScript; chart loading requires JavaScript.

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County comparison: PEP July 1, 2025 population (persons) and ACS 2024 5-year median owner-occupied home value (U.S. dollars); unavailable values identified
CountyGEOIDPEP July 1, 2025 population (persons)ACS 2024 5-year median home value (U.S. dollars)
Aurora County460032,801$151,900
Beadle County4600519,624$175,100
Bennett County460073,307$156,400
Bon Homme County460097,244$134,100
Brookings County4601137,635$264,600
Brown County4601337,561$221,100
Brule County460155,278$216,800
Buffalo County460171,802$117,800
Butte County4601910,856$244,600
Campbell County460211,377$115,900
Charles Mix County460239,303$170,600
Clark County460254,031$158,400
Clay County4602715,031$232,300
Codington County4602929,562$237,700
Corson County460313,781$69,800
Custer County460339,431$372,100
Davison County4603520,069$205,800
Day County460375,484$173,600
Deuel County460394,408$205,900
Dewey County460415,419$69,600
Douglas County460432,888$166,900
Edmunds County460454,022$163,300
Fall River County460477,467$193,200
Faulk County460492,178$147,500
Grant County460517,534$171,000
Gregory County460534,037$139,900
Haakon County460551,802$164,200
Hamlin County460576,900$208,600
Hand County460593,121$159,300
Hanson County460613,456$191,200
Harding County460631,331$166,100
Hughes County4606517,570$242,000
Hutchinson County460677,413$163,000
Hyde County460691,191$181,600
Jackson County460712,666$117,300
Jerauld County460731,654$150,800
Jones County46075913$139,600
Kingsbury County460775,284$169,500
Lake County4607910,993$247,600
Lawrence County4608129,459$346,500
Lincoln County4608377,145$348,300
Lyman County460853,694$165,800
McCook County460875,964$230,100
McPherson County460892,347$85,600
Marshall County460914,426$156,500
Meade County4609330,711$310,900
Mellette County460952,137$84,100
Miner County460972,281$142,600
Minnehaha County46099212,691$287,600
Moody County461016,632$226,500
Oglala Lakota County4610213,338$52,900
Pennington County46103116,792$302,200
Perkins County461052,853$114,600
Potter County461072,377$121,300
Roberts County4610910,255$154,500
Sanborn County461112,388$135,600
Spink County461156,155$123,300
Stanley County461173,018$203,500
Sully County461191,479$205,400
Todd County461218,863$53,900
Tripp County461235,708$132,900
Turner County461259,314$222,900
Union County4612717,402$301,100
Walworth County461295,217$136,600
Yankton County4613523,635$225,900
Ziebach County461372,389$99,600