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Groton, SD
City in Brown County, South Dakota.
Population
1,691
Land area
1.8sq mi
People per sq mi
966
ZIP codes
0
Groton and its ZIP codes
Groton at a glance
- Groton is about 81 times as dense as South Dakota as a whole.
- It is the 48th most populous of 439 cities and towns in South Dakota.
- Households here earn a median of $89,861 a year, 20% more than the South Dakota figure of $75,081.
- A typical owner-occupied home is valued at $190,600 (26% below South Dakota) and median rent is $981 a month.
Local data for Groton, SD
Counts from official public data
Housing and community stats
Groton, SD, American Community Survey 2020-2024
Median household income
$89,861
Poverty rate
4.3%
Median home value
$190,600
Median rent
$981/mo
Homeownership
73.1%
Bachelor's or higher
35.5%
Median age
33.9
Average commute
16.8 min
Largest reported origins and ancestries: German Americans (602), Norwegian Americans (188), Irish Americans (123).
Economy and federal money
Jobs, pay, income and spending are for Brown County. PPP loans are for Groton.
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
How people get to work
Groton, SD, workers 16 and older. American Community Survey 5-year estimates
- Drove alone91.4%
- Carpooled3.3%
- Public transit0.0%
- Walked1.5%
- Bicycle0.0%
- Taxi, ride-hailing, motorcycle or other0.0%
- Worked from home3.8%
Average one-way commute: 16.8 minutes for people who do not work from home.
Environment and hazard risk
Groton, SD, from FEMA, NOAA and EPA
Natural hazard risk
Relatively Low
Top: winter weather
Storm events since 1996
1,202
Countywide, mostly thunderstorm wind
Flood insurance policies
114
0.7% of homes, county
July high / Jan low
82° / 5°F
24.0 inches of rain a year
Hazards, floods and storm historyCheck a flood zone2 historic places
Health statistics
Share of adults in Groton, SD, CDC PLACES estimates
Obesity
34.3%
U.S. 33.3% +1.0 pts
Diabetes
11.0%
U.S. 12.1% -1.1 pts
Smoking
13.1%
U.S. 12.8% about the same
Uninsured (18-64)
7.1%
U.S. 11.1% -4.0 pts
Cities near Groton
| Name | Distance | Land area (sq mi) |
|---|---|---|
| FerneyCensus-designated place | 8.1 mi | 1 |
| AndoverTown | 10 mi | 0.3 |
| BathCensus-designated place | 11 mi | 0.3 |
| Bath CornerCensus-designated place | 11 mi | 0.2 |
| PierpontTown | 13 mi | 0.2 |
| StratfordTown | 14 mi | 0.2 |
| Hutterville ColonyCensus-designated place | 14 mi | 0.2 |
| VerdonTown | 14 mi | 0.3 |
| ColumbiaCity | 15 mi | 1.5 |
| ClaremontTown | 16 mi | 0.3 |
| Prairiewood VillageCensus-designated place | 16 mi | 0.6 |
| LangfordTown | 17 mi | 0.3 |
| Newport ColonyCensus-designated place | 18 mi | 0.3 |
| AberdeenCity | 18 mi | 16.6 |
| BristolCity | 19 mi | 0.5 |
| CondeCity | 20 mi | 0.6 |
Frequently asked questions
- What county is Groton, SD in?
- Groton is in Brown County, South Dakota.
- What is the population of Groton, SD?
- About 1,691 people live in Groton, based on American Community Survey 5-year estimates.
- What cities are near Groton?
- Nearby places include Ferney (8.1 mi), Andover (10 mi), Bath (11 mi), Bath Corner (11 mi), Pierpont (13 mi).
Source: U.S. Census Bureau (TIGER/Line boundaries, American Community Survey) · Data as of 12/31/2023