Aberdeen, SD Micro Area
The Aberdeen, SD micro area is made up of 2 counties in South Dakota: Brown and Edmunds. About 41,583 people lived there on July 1, 2025 (Census estimate), 1.7% fewer than in April 2020.
- Population, July 2025
- 41,583 1.7% fewer than in April 2020
- Type
- Micropolitan statistical area
- Counties
- 2: 1 central, 1 outlying
- Land area
- 2,839 sq mi (7,353 km²)
- Time zone
- Central TimeUTC-06:00 in January; UTC-05:00 in July
- State
- South Dakota
- CBSA code
- 10100
Counties in the Aberdeen, SD micro area, largest first
| County | Role | Population, July 2025 | Share of the area |
|---|---|---|---|
| Brown County | Central | 37,561 | 90.3% |
| Edmunds County | Outlying | 4,022 | 9.7% |
A central county holds the area’s core, an urban area of 10,000 to 49,999 people. An outlying county is in the area because of commuting: at least a quarter of its workers have jobs in the central county, or at least a quarter of the people working there live in them. A county belongs to one metro or micro area at most, and it counts whole, countryside included.
Principal city
- Aberdeen28,189 people
OMB names the area after its largest principal cities. A principal city is the area’s largest city, plus any other city that is very large or a big job center, and smaller ones with at least as many jobs as working residents (2020 Census and commuting figures). People counts are American Community Survey 2020–2024 5-year estimates.
Before using this answer on a form
A metro or micro area is a statistical area that OMB draws for federal statistics. It is not a city, a local government or a mailing address, and it is not a measure of urban and rural: whole counties count, rural parts included. Programs that use metro areas, such as housing income limits or wage rates, can use their own version of these lists; check the program’s own list for an address.
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