HomeSouth DakotaBrown CountyGroton
Groton, South Dakota: commercial real estate data.
Groton is a Census city of 1,691 people across 1.75 square miles of land, in Brown County. Median household income is $89,861, 73.1 percent of occupied homes are owned.
Underlined figures are computed by MMCG Analytics, not published by the agency.
Groton
What Groton is
- Census place typecity
- Land area1.75 sq mi
- Water area0 sq mi
- Population per square mile of land966 plus or minus 226
- County holding the largest share of its areaBrown County, 100.0 percent
US Census Bureau, cartographic boundary file, places, 2024 vintage. US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
Groton
How many people live in Groton
- Population1,691 plus or minus 396
- Median age33.9
- Population under 18517 plus or minus 150
- Share under 1830.6 percent
- Population 65 and over220 plus or minus 46
- Share 65 and over13.0 percent plus or minus 4.1
- Households625
- Family households439 plus or minus 104
- Share of households that are families70.2 percent
US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
Groton
Income and work in Groton
- Median household income$89,861 plus or minus $24,523
- Per capita income$40,980
- Civilian labor force876 plus or minus 214
- Employed866 plus or minus 214
- Unemployed10 plus or minus 9
- Unemployment rate1.1 percent plus or minus 1.0
- Adults 25 and over1,112 plus or minus 225
- Adults 25 and over with a high school diploma or higher95.6 percent plus or minus 24.5
- Adults 25 and over with a bachelor degree or higher35.5 percent
- Adults 25 and over with a graduate degree13.2 percent plus or minus 4.6
US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
Groton
Housing in Groton
- Housing units694
- Occupied units625
- Vacant units69 plus or minus 44
- Vacancy rate9.9 percent plus or minus 6.1
- Owner occupied457 plus or minus 101
- Renter occupied168 plus or minus 56
- Ownership rate73.1 percent
- Median owner-occupied home value$190,600 plus or minus $42,705
- Median gross rent, monthly$981
- Annual rent as a share of median income13.1 percent plus or minus 3.7
- Single family units529 plus or minus 107
- Share single family76.2 percent
- Units in buildings of two or more142 plus or minus 52
- Share in buildings of two or more20.5 percent plus or minus 6.6
- Mobile homes23 plus or minus 17
- Median year structure built1975
US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
Groton
How Groton gets to work
- Workers 16 and over who commute821 plus or minus 210
- Commuting under 15 minutes315 plus or minus 97
- Share commuting under 15 minutes38.4 percent
- Commuting 30 minutes or more100 plus or minus 49
- Share commuting 30 minutes or more12.2 percent plus or minus 5.1
- Drove alone91.4 percent
- Carpooled3.3 percent plus or minus 2.4
- Public transport0.0 percent
- Walked1.5 percent plus or minus 1.4
- Worked from home3.8 percent plus or minus 1.6
US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
Groton
SBA loans in Groton (504)
- Approvals2
- Gross approval$617,000
- Average approval$308,500
- Median approval$308,500
- Largest approval$317,000
- Jobs supported4
- Loans with a final outcome1
- Charged off0
- Median term240 months
- Distinct CDCs1
Counted by borrower city: approvals to borrowers whose address is in Groton, in any county, FY2010 to FY2026. Only 1 loan has reached a final outcome, fewer than the 30 a charge-off rate needs, so no rate is published.
US Small Business Administration, 504 FOIA release, FY2010 to FY2026 year to date, as of 2026-06-30.
Groton
Flood risk in Groton
- NFIP communityCity of Groton
- NFIP community number460179
- Participating in the NFIPYes
- Community Rating System classNone
- Currently effective map date03/18/08
The City of Groton participates in the National Flood Insurance Program as community 460179 and carries no Community Rating System class, so no CRS premium discount applies to it.
Federal Emergency Management Agency, NFIP Community Status Book (OpenFEMA), as of 2026-09-26.
Brown County, not Groton
Brown County context, not Groton figures
- Establishments in Brown County1,245
- Covered employment, Brown County19,808
- Average annual pay, Brown County$54,430
- Housing units permitted, Brown County85
Every figure in this section is published for Brown County as a whole and is not a measurement of Groton.
US Census Bureau, County Business Patterns, 2023. US Bureau of Labor Statistics, Quarterly Census of Employment and Wages, 2024 annual averages. US Census Bureau, Building Permits Survey, 2024 annual.
Coverage
What this page does not hold.
Parcel detail, zoning and the flood zone at an address are not on this page; they resolve at the address in the platform. How this page was built →
Common questions
Groton questions, answered from the record.
How many people live in Groton, South Dakota?
1,691, in 625 households. Groton city covers 1.75 square miles of land, which is 966 people per square mile. Source: US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
What county is Groton in?
Brown County, which holds 100.0 percent of the place by area. Source: US Census Bureau, cartographic boundary file, places, 2024 vintage.
What is the median household income in Groton?
$89,861. The median owner-occupied home is valued at $190,600. Median gross rent is $981 per month. Source: US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
Is Groton in the National Flood Insurance Program?
Yes. Groton appears in the FEMA Community Status Book as Groton, city of, community 460179, with no Community Rating System class, so no CRS discount applies. Whether a specific parcel sits in a mapped special flood hazard area is an address level question the platform answers.
Are the county figures on this page Groton figures?
No, and they are labeled so. County Business Patterns, QCEW, the Building Permits Survey, BEA product and IRS migration are published for Brown County as a whole and there is no place level equivalent. They appear in one clearly marked section as context and are never presented as measurements of Groton.
Is zoning published for Groton?
No. Nothing on this page presents parcel level zoning.