The U.S. currently has 14 statistical areas that have been delineated by the Office of Management and Budget (OMB). On July 21, 2023, the OMB delineated two combined statistical areas, three metropolitan statistical areas, and nine micropolitan statistical areas in . As of 2025, the largest of these is the Sioux Falls, SD-MN MSA, comprising the area around the state's largest city of Sioux Falls.

+The 14 United States statistical areas and 66 counties of the State of South DakotaCombined statistical area2025 population (est.)Core-based statistical area2025 population (est.)County2025 population (est.)noneSioux Falls, SD-MN MSA314,638305,114 ()Minnehaha County, South Dakota212,691Lincoln County, South Dakota77,145Rock County, Minnesota9,524Turner County, South Dakota9,314McCook County, South Dakota5,964Rapid City–Spearfish, SD CSA186,393Rapid City, SD MSA156,934Pennington County, South Dakota116,792Meade County, South Dakota30,711Custer County, South Dakota9,431Spearfish, SD μSA29,459Lawrence County, South Dakota29,459noneAberdeen, SD μSA41,583Brown County, South Dakota37,561Edmunds County, South Dakota4,022Brookings, SD μSA37,635Brookings County, South Dakota37,635Watertown, SD μSA29,562Codington County, South Dakota29,562Mitchell, SD μSA25,913Davison County, South Dakota20,069Hanson County, South Dakota3,456Sanborn County, South Dakota2,388Yankton, SD μSA23,635Yankton County, South Dakota23,635Pierre, SD μSA20,588Hughes County, South Dakota17,570Stanley County, South Dakota3,018Huron, SD μSA19,624Beadle County, South Dakota19,624Sioux City–Le Mars, IA-NE-SD CSA171,43517,402 (SD)Sioux City, IA-NE-SD MSA145,73817,402 (SD)Woodbury County, Iowa106,649Dakota County, Nebraska21,687Union County, South Dakota17,402Le Mars, IA μSA25,697Plymouth County, Iowa25,697noneVermillion, SD μSA15,031Clay County, South Dakota15,031noneOglala Lakota County, South Dakota13,338Lake County, South Dakota10,993Butte County, South Dakota10,856Roberts County, South Dakota10,255Charles Mix County, South Dakota9,303Todd County, South Dakota8,863Grant County, South Dakota7,534Fall River County, South Dakota7,467Hutchinson County, South Dakota7,413Bon Homme County, South Dakota7,244Hamlin County, South Dakota6,900Moody County, South Dakota6,632Spink County, South Dakota6,155Tripp County, South Dakota5,708Day County, South Dakota5,484Dewey County, South Dakota5,419Kingsbury County, South Dakota5,284Brule County, South Dakota5,278Walworth County, South Dakota5,217Marshall County, South Dakota4,426Deuel County, South Dakota4,408Gregory County, South Dakota4,037Clark County, South Dakota4,031Corson County, South Dakota3,781Lyman County, South Dakota3,694Bennett County, South Dakota3,307Hand County, South Dakota3,121Douglas County, South Dakota2,888Perkins County, South Dakota2,853Aurora County, South Dakota2,801Jackson County, South Dakota2,666Ziebach County, South Dakota2,389Potter County, South Dakota2,377McPherson County, South Dakota2,347Miner County, South Dakota2,281Faulk County, South Dakota2,178Mellette County, South Dakota2,137Buffalo County, South Dakota1,802Haakon County, South Dakota1,802Jerauld County, South Dakota1,654Sully County, South Dakota1,479Campbell County, South Dakota1,377Harding County, South Dakota1,331Hyde County, South Dakota1,191Jones County, South Dakota913State of South Dakota935,094

+The 12 core-based statistical areas of the State of South Dakota2025 rankCore-based statistical areaPopulation2025 estimateChange2020 CensusChange2010 CensusSioux Falls, SD-MN MSA (SD)Rapid City, SD MSAAberdeen, SD μSABrookings, SD μSAWatertown, SD μSASpearfish, SD μSAMitchell, SD μSA (MN)Yankton, SD μSAPierre, SD μSAHuron, SD μSASioux City, IA-NE-SD MSA (SD)Vermillion, SD μSASioux City, IA-NE-SD MSASioux Falls, SD-MN MSA

+The two combined statistical areas of the State of South Dakota2025 rankCombined statistical areaPopulation2025 estimateChange2020 CensusChange2010 CensusRapid City–Spearfish, SD CSASioux City–Le Mars, IA-NE-SD CSA (SD)Sioux City–Le Mars, IA-NE-SD CSA

See also

Geography of South Dakota Demographics of South Dakota

Notes

References

External links

Office of Management and Budget United States Census Bureau