Groton, South Dakota Population 2020

1,529

Groton is a city located in South Dakota. With a 2020 population of 1,529, it is the 42nd largest city in South Dakota and the 8643rd largest city in the United States. Groton is currently growing at a rate of 0.92% annually and its population has increased by 4.87% since the most recent census, which recorded a population of 1,458 in 2010. Spanning over 2 miles, Groton has a population density of 873 people per square mile.

The average household income in Groton is $92,692 with a poverty rate of 6.85%. The median rental costs in recent years comes to $819 per month, and the median house value is $166,300. The median age in Groton is 38.1 years, 37.3 years for males, and 39.2 years for females. For every 100 females there are 81.2 males.

Groton Demographics

According to the most recent ACS, the racial composition of Groton was:

  • White: 97.61%
  • Two or more races: 1.93%
  • Native American: 0.47%
  • Black or African American: 0.00%
  • Asian: 0.00%
  • Native Hawaiian or Pacific Islander: 0.00%
  • Other race: 0.00%
The current population of Groton, South Dakota is 1,529, based on our projections of the latest US Census estimates. The US Census estimates the 2018 population at 1,501.The last official US Census in 2010 recorded the population at 1,458.

Groton, South Dakota Population 2020

Population by Race

Race Population Percentage
White1,67197.61%
Two or More Races331.93%
American Indian and Alaska Native80.47%

Groton Population Pyramid 2020

Groton Median Age

38.1


Total

37.3


Male

39.2


Female

Groton Adults

There are 1,187 adults, (290 of whom are seniors) in Groton.

Groton Age Dependency

90.9

Age Dependency Ratio

32.3

Old Age Dependency Ratio

58.5

Child Dependency Ratio

Groton Sex Ratio

Female

945

55.20%

Male

767

44.80%

Groton Households and Families

Groton Renter vs Owner Occupied by Household Type

Groton Household Types

Type Owner Renter
Married93.2%6.8%
Male90.7%9.3%
All75.7%24.3%
Non Family52.1%47.9%
Female46.9%53.1%

75.7%

Rate of Home Ownership

Type Count Average Size Owned
All6222.6875.7
Married3253.4493.2
Non Family1901.2152.1
Female643.1646.9
Male432.6590.7

3.25

Average Family Size

2.68

Average Household Size

7.4%

Unmarried (Opposite Sex)

0%

Unmarried (Same Sex)

Groton Education

Education Attained Count Percentage
Less Than 9th Grade0.00%
9th to 12th Grade312.88%
High School Graduate36834.17%
Some College21119.59%
Associates Degree18517.18%
Bachelors Degree22220.61%
Graduate Degree605.57%

Groton Educational Attainment by Race

Name Total High School Bachelors
White1,0401,009271
Hispanic23235
Multiple Races11116
Native American88

The highest rate of high school graduation is among native american people with a rate of 100.00%.

The highest rate of bachelors degrees is among multiple races people with a rate of 54.55%.

Name Average Male Female
Overall$41,875$52,200$29,688
Less Than High School$2,500$$
High School Grad$26,016$41,848$14,583
Some College$41,250$52,292$29,844
Bachelors Degree$53,929$69,375$47,292
Graduate Degree$106,250$113,750$106,250

$41,875

Average Earnings

$52,200

Average Male

$29,688

Average Female

Groton Language

Groton Language by Age

Groton Language

98.25% of Groton residents speak only English, while 1.75% speak other languages. The non-English language spoken by the largest group is Other Indo-European, which is spoken by 1.31% of the population.

Groton Poverty

Groton Poverty by Race

Name Total In Poverty Poverty Rate
White1,5161056.93%
Hispanic11397.96%
Multiple33515.15%

6.85%

Overall Poverty Rate

3.87%

Male Poverty Rate

9.28%

Female Poverty Rate

Poverty in Groton

The race most likely to be in poverty in Groton is Multiple, with 15.15% below the poverty level.

The race least likely to be in poverty in Groton is White, with 6.93% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 2.18%. Among those working part-time, it was 11.23%, and for those that did not work, the poverty rate was 13.85%.

Name Poverty
Less Than High School35.48%
High School16.76%
Some College2.84%
Bachelors or Greater0.00%
Name Poverty
Male Unemployed62.50%
Female Unemployed57.14%
Female Employed7.00%
Male Employed0.90%

Groton Income

Groton Income by Household Type

Name Median Mean
Households$64,091$92,692
Families$80,500$111,200
Married Families$100,750-
Non Families$42,500$45,317

Groton Marital Status

Groton Marital Status

Marriage Rates

53.5%

Overall Marriage Rate

58.6%

Male Marriage Rate

49.6%

Female Marriage Rate

Groton Married by Age and Sex

Groton Marriage

The age group where males are most likely to be married is 55-64, while the female age group most likely to be married is 35-44.

Groton Marital Status by Race

Groton Veterans

65

Number of Veterans

55

Male Veterans

10

Female Veterans

War Veterans
First Gulf War24
Vietnam17
World War II9
Korea3
Second Gulf War2

$Groton Veterans by Education

0.00%

Veteran Poverty Rate

10.71%

Veteran Disability Rate

Groton Employment Status

68.8%

Labor Force Participation

67.6%

Employment Rate

1.7%

Unemployment Rate

Groton Place of Birth

Origin of Non-Citizens

Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.

Origin of Naturalized Citizens

73.36%

Born in South Dakota

99.88%

Native Born

0.12%

Foreign Born

0.00%

Non Citizen

Place of Birth

99.88% of Groton residents were born in the United States, with 73.36% having been born in South Dakota. 0.00% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.

Year Population Growth Annual Growth Rate
20201,529140.92%
20191,515140.93%
20181,501-12-0.79%
20171,513140.93%
20161,49950.33%
20151,49450.34%
20141,489-9-0.60%
20131,49850.33%
20121,493211.43%
20111,472120.82%
20101,4600.00%