What is the population of Groton?

The population of Groton, SD is 121.

Where is Groton located?

Groton, SD is located at latitude 45.4474600 and longitude -98.0987100. It is in United States.

What is the area of Groton?

The area of Groton, SD is 4.535917 km².

What is the elevation of Groton?

Groton, SD has an elevation of 397 meters (1302 feet) above sea level.

What time zone is Groton in?

Groton, SD is in the America/Chicago time zone.

What state is Groton in?

Groton is in the state of South Dakota, United States.

What county is Groton, SD in?

Groton is in Brown County, South Dakota.

How has the population of Groton changed?

The population of Groton, SD has increased from 118 (2010) to 121 (2020), a change of 2.5%.

Groton, SD - Geographic Facts & Maps

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	18:30:17 (7th November 2026)
Density	27 Pop. per km² as of 2020
Population growth	2.54% (2010-2020)
Weather	58℉ Widespread Fog then Partly Sunny 7-days weather

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

58°F

Widespread Fog then Partly Sunny

8 to 13 mph SW Today

Widespread fog before 11am. Partly sunny. High near 58, with temperatures falling to around 55 in the afternoon. Southwest wind 8 to 13 mph, with gust...

7-Day Forecast

Official website of Groton

Official Website

Demographics

The population of Groton increased by 2.54% in 10 years.

Year	Population	% Change	Method
2010	118	-	census
2011	118	0%	estimation process
2012	121	2.54%	estimation process
2013	121	0%	estimation process
2014	119	-1.65%	estimation process
2015	119	0%	estimation process
2016	122	2.52%	estimation process
2017	122	0%	estimation process
2018	121	-0.82%	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

Nearby Post Offices

Closest post offices linked to Groton.

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

Groton, South Dakota