Checked
Brown County, SD
16 cities and towns and 14 ZIP codes in Brown County, South Dakota.
Population
37,877
Land area
1,713sq mi
People per sq mi
22
ZIP codes
14
Cities and towns in Brown County
Brown County at a glance
- Brown County is 85% denser than South Dakota as a whole.
- By population, it ranks 4th among 66 counties in South Dakota.
- The median household income is $70,898, 6% below the South Dakota median of $75,081.
- A typical owner-occupied home is valued at $221,100 (14% below South Dakota) and median rent is $777 a month.
- Its largest cities are Aberdeen (28,189), Groton (1,691) and Warner (512).
Local data for Brown County, SD
Counts from official public data
- Hospitals2
- Emergency Rooms2
- Nursing Homes5
- Schools31
- Colleges1
- Libraries3
- Banks16
- Post Offices3
- Parks19
- Grocery Stores12
- Restaurants97
- Affordable Housing7
- Home Health Agencies1
- Hospice Care1
- Dialysis Centers2
- Community Health Centers1
- Mental Health & Addiction Treatment1
- Private Schools10
- Toxic Release Facilities6
- Historic Places36
Housing and community stats
Brown County, SD, American Community Survey 2020-2024
Median household income
$70,898
Poverty rate
11.7%
Median home value
$221,100
Prices +1.8% in a year
Median rent
$777/mo
Homeownership
67.6%
Bachelor's or higher
33.8%
Median age
37.8
Average commute
13.9 min
Largest reported origins and ancestries: German Americans (16,186), Norwegian Americans (4,115), Irish Americans (2,743).
Economy and federal money
Jobs, income, federal spending and pandemic loans
Unemployment rate
2.0%
Aug 2026, -0.1 pts in a year
Average annual pay
$56,565
19,589 jobs, 2025
Income per person
$79,984
BEA, 2024
Federal spending
$280M
FY 2026, $7,314 per person
PPP loans
$140M
3,028 loans, 18,407 jobs reported
Campaign donations
$341K
Itemized, 2026 cycle
How people get to work
Brown County, SD, workers 16 and older. American Community Survey 5-year estimates
- Drove alone79.3%
- Carpooled9.7%
- Public transit0.5%
- Walked3.1%
- Bicycle0.1%
- Taxi, ride-hailing, motorcycle or other0.9%
- Worked from home6.3%
Average one-way commute: 13.9 minutes for people who do not work from home.
Environment and hazard risk
Brown County, SD, from FEMA, NOAA and EPA
Natural hazard risk
Relatively Low
Top: winter weather
Storm events since 1996
1,202
Most often thunderstorm wind
Flood insurance policies
114
0.7% of homes, county
July high / Jan low
83° / 0°F
22.5 inches of rain a year
Hazards, floods and storm historyCheck a flood zone36 historic places
Health statistics
Share of adults in Brown County, SD, CDC PLACES estimates
Obesity
35.1%
U.S. 33.3% +1.8 pts
Diabetes
11.2%
U.S. 12.1% -0.9 pts
Smoking
14.1%
U.S. 12.8% +1.3 pts
Uninsured (18-64)
8.2%
U.S. 11.1% -2.9 pts
Cities, towns and ZIP codes in Brown County
Population shown
Frequently asked questions
- What is the largest city in Brown County, SD?
- Aberdeen is the largest city or town in Brown County, with about 28,189 residents.
- How many ZIP codes are in Brown County?
- Brown County includes 14 ZIP Code Tabulation Areas, including 57401, 57426, 57427, 57432, 57433.
- What is the population of Brown County, SD?
- About 37,877 people live in Brown County, based on American Community Survey 5-year estimates.
- What counties border Brown County?
- Brown County borders Spink County, Day County, Dickey County, ND, Marshall County, Edmunds County, Sargent County, ND, McPherson County, Faulk County.
Source: U.S. Census Bureau (TIGER/Line boundaries, American Community Survey) · Data as of 12/31/2023