# South Dakota statistical areas

The U.S. State of South Dakota 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 South Dakota. As of 2023, the largest of these is the Sioux Falls, SD-MN MSA, comprising the area around the state's largest city of Sioux Falls.

## Background

The Office of Management and Budget (OMB) has designated more than 1,000 statistical areas for the United States and Puerto Rico. These statistical areas are important geographic delineations of population clusters used by the OMB, the United States Census Bureau, planning organizations, and federal, state, and local government entities.
The OMB defines a core-based statistical area (commonly referred to as a CBSA) as the county or counties (or county-equivalents) surrounding at least one densely-settled core of at least 10,000 population, "plus adjacent counties having a high degree of social and economic integration with the core as measured through commuting ties with the counties containing the core". The OMB further divides core-based statistical areas based on population into metropolitan statistical areas (MSAs) for those with at least 50,000 and micropolitan statistical areas (μSAs) for those with 10,000 to 49,999 people.
The OMB defines a combined statistical area (CSA) as two or more adjacent core-based statistical areas where the employment interchange rate (% commuting from A to B plus % commuting from B to A) is at least 15%. The primary statistical areas (PSAs) include all combined statistical areas and any core-based statistical area that is not a constituent of a combined statistical area.

## Table

The 14 United States statistical areas and 66 counties of the State of South Dakota :
| Combined statistical area | 2023 population (est.) | Core-based statistical area | 2023 population (est.) | County | 2023 population (est.) |
| none | none | Sioux Falls, SD-MN MSA | 304,555 295,004 (SD) | Minnehaha County, South Dakota | 206,930 |
| none | none | Sioux Falls, SD-MN MSA | 304,555 295,004 (SD) | Lincoln County, South Dakota | 73,238 |
| none | none | Sioux Falls, SD-MN MSA | 304,555 295,004 (SD) | Rock County, Minnesota | 9,551 |
| none | none | Sioux Falls, SD-MN MSA | 304,555 295,004 (SD) | Turner County, South Dakota | 9,027 |
| none | none | Sioux Falls, SD-MN MSA | 304,555 295,004 (SD) | McCook County, South Dakota | 5,809 |
| Rapid City-Spearfish, SD CSA | 184,027 | Rapid City, SD MSA | 155,974 | Pennington County, South Dakota | 115,903 |
| Rapid City-Spearfish, SD CSA | 184,027 | Rapid City, SD MSA | 155,974 | Meade County, South Dakota | 30,954 |
| Rapid City-Spearfish, SD CSA | 184,027 | Rapid City, SD MSA | 155,974 | Custer County, South Dakota | 9,117 |
| Rapid City-Spearfish, SD CSA | 184,027 | Spearfish, SD μSA | 28,053 | Lawrence County, South Dakota | 28,053 |
| none | none | Aberdeen, SD μSA | 41,790 | Brown County, South Dakota | 37,733 |
| none | none | Aberdeen, SD μSA | 41,790 | Edmunds County, South Dakota | 4,057 |
| none | none | Brookings, SD μSA | 35,980 | Brookings County, South Dakota | 35,980 |
| none | none | Watertown, SD μSA | 28,971 | Codington County, South Dakota | 28,971 |
| none | none | Mitchell, SD μSA | 25,792 | Davison County, South Dakota | 19,922 |
| none | none | Mitchell, SD μSA | 25,792 | Hanson County, South Dakota | 3,471 |
| none | none | Mitchell, SD μSA | 25,792 | Sanborn County, South Dakota | 2,399 |
| none | none | Yankton, SD μSA | 23,517 | Yankton County, South Dakota | 23,517 |
| none | none | Pierre, SD μSA | 20,667 | Hughes County, South Dakota | 17,624 |
| none | none | Pierre, SD μSA | 20,667 | Stanley County, South Dakota | 3,043 |
| none | none | Huron, SD μSA | 19,591 | Beadle County, South Dakota | 19,591 |
| Sioux City-Le Mars, IA-NE-SD CSA | 170,124 17,183 (SD) | Sioux City, IA-NE-SD MSA | 144,402 17,183 (SD) | Woodbury County, Iowa | 105,951 |
| Sioux City-Le Mars, IA-NE-SD CSA | 170,124 17,183 (SD) | Sioux City, IA-NE-SD MSA | 144,402 17,183 (SD) | Dakota County, Nebraska | 21,268 |
| Sioux City-Le Mars, IA-NE-SD CSA | 170,124 17,183 (SD) | Sioux City, IA-NE-SD MSA | 144,402 17,183 (SD) | Union County, South Dakota | 17,183 |
| Sioux City-Le Mars, IA-NE-SD CSA | 170,124 17,183 (SD) | Le Mars, IA μSA | 25,722 | Plymouth County, Iowa | 25,722 |
| none | none | Vermillion, SD μSA | 15,431 | Clay County, South Dakota | 15,431 |
| none | none | none | none | Oglala Lakota County, South Dakota | 13,434 |
| none | none | none | none | Lake County, South Dakota | 11,031 |
| none | none | none | none | Butte County, South Dakota | 10,863 |
| none | none | none | none | Roberts County, South Dakota | 10,206 |
| none | none | none | none | Charles Mix County, South Dakota | 9,240 |
| none | none | none | none | Todd County, South Dakota | 9,199 |
| none | none | none | none | Grant County, South Dakota | 7,553 |
| none | none | none | none | Hutchinson County, South Dakota | 7,394 |
| none | none | none | none | Fall River County, South Dakota | 7,393 |
| none | none | none | none | Bon Homme County, South Dakota | 7,065 |
| none | none | none | none | Hamlin County, South Dakota | 6,451 |
| none | none | none | none | Moody County, South Dakota | 6,450 |
| none | none | none | none | Spink County, South Dakota | 6,166 |
| none | none | none | none | Tripp County, South Dakota | 5,621 |
| none | none | none | none | Day County, South Dakota | 5,451 |
| none | none | none | none | Brule County, South Dakota | 5,311 |
| none | none | none | none | Kingsbury County, South Dakota | 5,276 |
| none | none | none | none | Walworth County, South Dakota | 5,269 |
| none | none | none | none | Dewey County, South Dakota | 5,208 |
| none | none | none | none | Marshall County, South Dakota | 4,390 |
| none | none | none | none | Deuel County, South Dakota | 4,354 |
| none | none | none | none | Gregory County, South Dakota | 4,018 |
| none | none | none | none | Clark County, South Dakota | 3,948 |
| none | none | none | none | Corson County, South Dakota | 3,782 |
| none | none | none | none | Lyman County, South Dakota | 3,705 |
| none | none | none | none | Bennett County, South Dakota | 3,305 |
| none | none | none | none | Hand County, South Dakota | 3,107 |
| none | none | none | none | Douglas County, South Dakota | 2,838 |
| none | none | none | none | Perkins County, South Dakota | 2,834 |
| none | none | none | none | Aurora County, South Dakota | 2,782 |
| none | none | none | none | Jackson County, South Dakota | 2,776 |
| none | none | none | none | Potter County, South Dakota | 2,413 |
| none | none | none | none | McPherson County, South Dakota | 2,334 |
| none | none | none | none | Ziebach County, South Dakota | 2,322 |
| none | none | none | none | Miner County, South Dakota | 2,280 |
| none | none | none | none | Faulk County, South Dakota | 2,151 |
| none | none | none | none | Buffalo County, South Dakota | 1,884 |
| none | none | none | none | Haakon County, South Dakota | 1,851 |
| none | none | none | none | Mellette County, South Dakota | 1,851 |
| none | none | none | none | Jerauld County, South Dakota | 1,660 |
| none | none | none | none | Sully County, South Dakota | 1,494 |
| none | none | none | none | Campbell County, South Dakota | 1,340 |
| none | none | none | none | Harding County, South Dakota | 1,324 |
| none | none | none | none | Hyde County, South Dakota | 1,186 |
| none | none | none | none | Jones County, South Dakota | 855 |
| State of South Dakota | State of South Dakota | State of South Dakota | State of South Dakota | State of South Dakota | 919,318 |

## Core-based statistical areas

The following table provides the in-state population ranking of each CBSA along with its rate of population change over time.
The 12 core-based statistical areas of the State of South Dakota :
| 2023 rank | Core-based statistical area | Population | Population | Population | Population | Population |
| 2023 rank | Core-based statistical area | 2023 estimate | Change | 2020 Census | Change | 2010 Census |
| 1 | Sioux Falls, SD-MN MSA (SD) | 295,004 | +6.60% | 276,730 | +21.03% | 228,651 |
| 2 | Rapid City, SD MSA | 155,974 | +5.82% | 147,392 | +9.51% | 134,598 |
| 3 | Aberdeen, SD μSA | 41,790 | −1.18% | 42,287 | +4.15% | 40,602 |
| 4 | Brookings, SD μSA | 35,980 | +4.67% | 34,375 | +7.54% | 31,965 |
| 5 | Watertown, SD μSA | 28,971 | +2.28% | 28,325 | +4.03% | 27,227 |
| 6 | Spearfish, SD μSA | 28,053 | +8.87% | 25,768 | +6.93% | 24,097 |
| 7 | Mitchell, SD μSA (MN) | 25,792 | +0.17% | 25,747 | +2.21% | 25,190 |
| 8 | Yankton, SD μSA | 23,517 | +0.89% | 23,310 | +3.89% | 22,438 |
| 9 | Pierre, SD μSA | 20,667 | −0.38% | 20,745 | +3.79% | 19,988 |
| 10 | Huron, SD μSA | 19,591 | +2.31% | 19,149 | +10.06% | 17,398 |
| 11 | Sioux City, IA-NE-SD MSA (SD) | 17,183 | +2.21% | 16,811 | +16.75% | 14,399 |
| 12 | Vermillion, SD μSA | 15,431 | +3.10% | 14,967 | +7.96% | 13,864 |
| | Sioux City, IA-NE-SD MSA | 144,402 | +0.05% | 144,334 | +4.91% | 137,577 |
| | Sioux Falls, SD-MN MSA | 304,555 | +6.33% | 286,434 | +20.18% | 238,338 |

## Combined statistical areas

The following table provides the in-state population ranking of each CSA along with its rate of population change over time.
The two combined statistical areas of the State of South Dakota :
| 2023 rank | Combined statistical area | Population | Population | Population | Population | Population |
| 2023 rank | Combined statistical area | 2023 estimate | Change | 2020 Census | Change | 2010 Census |
| 1 | Rapid City-Spearfish, SD CSA | 184,027 | +6.28% | 173,160 | +9.11% | 158,695 |
| 2 | Sioux City-Le Mars, IA-NE-SD CSA (SD) | 17,183 | +2.21% | 16,811 | +16.75% | 14,399 |
| | Sioux City-Le Mars, IA-NE-SD CSA | 170,124 | +0.05% | 170,032 | +4.59% | 162,563 |