Groton, South Dakota

Groton: city in Brown County, South Dakota, United States

About

Groton is a city located in the county of Brown in the U.S. state of South Dakota. Its population at the 2010 census was 118 and a population density of 26 people per km². After 10 years in 2020 city had an estimated population of 121 inhabitants.

The city was created 138 years ago in 1887.

Groton locator map
Location of Groton on South Dakota map.

Quick Facts about Groton

Population 121 (2020)
Country United States of America
State South Dakota (United States)
County Brown County
Postal code 57445
Phone Area Codes 605
Area 4.54 km2
Latitude & Longitude 45.4475,-98.0987
Altitude 1,302 feet / 397 meters
Establishment January 01, 1888 (138 years ago)
Time Zone UTC−06:00
Local time 20:05:02 (22nd April 2026)
Density 27 Pop. per km² as of 2020
Population growth 2.48% (2010-2020)
Weather 86℉ Mostly Sunny 7-days weather
Brown County South Dakota Incorporated and Unincorporated areas Groton Highlighted locator map image
Brown County South Dakota Incorporated and Unincorporated areas Groton Highlighted locator map image

Geography

Groton is located at 45°26'51"N 98°5'55"W (45.4474600, -98.0987100).

Groton map

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Weather

86°F
Mostly Sunny
16 to 29 mph SSE Wednesday

Mostly sunny, with a high near 86. South southeast wind 16 to 29 mph, with gusts as high as 39 mph.

7-Day Forecast

Official website of Groton

Official Website

Demographics

The population of Groton increased by 2.48% in 10 years.

Year Population % Change Method
2010 118 - census
2011 118 0% estimation process
2012 121 2.48% estimation process
2013 121 0% estimation process
2014 119 -1.68% estimation process
2015 119 0% estimation process
2016 122 2.46% estimation process
2017 122 0% estimation process
2018 121 -0.83% estimation process
2019 120 -0.83% estimation process
2020 121 0.83% estimation process
Groton zip code is 57445. County name: Brown, County fips: 46013

People born in Groton (1)

American jockey Earl Sande was born in Groton

Nearby Schools and Colleges

Schools and campuses linked to Groton, SD. Select a name to open its map and contact details.

Code Name City ZIP
219259 Northern State University Aberdeen (SD) 57401-7198
219295 Presentation College Aberdeen (SD) 57401-1280

Closest post offices linked to Groton.

Post Office Name City ZIP
Groton Post Office Groton (SD) 57445

Other places with the same name (5)

  • Groton, Connecticut town in Connecticut with a population of 38,258 people.
  • Groton, Massachusetts town in Connecticut with a population of 11,256 people.
  • Groton, New York town in Tompkins County, New York, United States with a population of 2,156 people.
  • Groton, Vermont town in Caledonia County, Vermont with a population of 954 people.
  • Groton, New Hampshire human settlement in Grafton County, New Hampshire, United States of America with a population of 610 people.

Other cities in Brown County

Cities, towns, neighborhoods & other populated places in Brown County , SD.

City Name Population Title
Aberdeen 930 City in and the county seat of Brown County, South Dakota, United States
Bath 747 Unincorporated community in South Dakota
Warner 593 Town in Brown County, South Dakota, United States
Ordway 295 Township in Brown County, South Dakota
Claremont 122 Town in Brown County, South Dakota, United States
Columbia 108 City in Brown County, South Dakota, United States
Westport 107 Town in Brown County, South Dakota, United States
Putney 104 Human settlement in United States of America
Stratford 74 Town in South Dakota, United States of America
Frederick 61 Town in Brown County, South Dakota, United States
Hecla 52 Township in Brown County, South Dakota
Verdon 5 Town in South Dakota, United States of America