Groton city, South Dakota Demographics & Population 2026
As of 2026, Groton city, South Dakota has a total population of 1,794, the 48th largest city in South Dakota, with a median household income of $82,083, which is 13% higher than the state average. The poverty rate is 3.9%.
Key Takeaways
- An exceptionally low poverty rate of 3.9% — among the lowest in South Dakota.
- Housing is very affordable with a home-value-to-income ratio of just 2.1x.
- Near full employment with an unemployment rate of just 0.7%.
Groton city Quick Facts
How Groton city Compares
Median Household Income
Median Home Value
Economy & Housing
Household Income Distribution
Employment
Housing Overview
People & Demographics
Age Distribution
Race & Ethnicity
Diversity Index
A less diverse community where one racial or ethnic group represents a large majority.
State average: 33 | National average: 60
Education
Educational Attainment (Adults 25+)
Groton city Rankings in South Dakota
Explore South Dakota Rankings
Other Cities in Brown County
| City | Population | Median Income | Poverty | Home Value |
|---|---|---|---|---|
| Aberdeen city | 28,297 | $63,715 | 12.9% | $205,500 |
| Warner town | 494 | $114,375 | 0.4% | $231,600 |
| Hecla city | 204 | N/A | 9.3% | $47,100 |
| Frederick town | 178 | $81,071 | 12.9% | $83,100 |
| Columbia city | 170 | $59,038 | 1.2% | $121,900 |
| Westport town | 93 | $58,750 | 0.0% | $103,900 |
| Claremont town | 90 | $56,667 | 10.0% | $74,000 |
| Ravinia town | 53 | $29,167 | 20.8% | $63,300 |
| Stratford town | 50 | $73,750 | 8.0% | $69,200 |
| Verdon town | 4 | N/A | 0.0% | N/A |
Cities Similar to Groton city
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| Parkston city | 1,981 | $71,313 | $145,500 | 24.8% | 8.5% |
| Kyle CDP | 1,495 | N/A | N/A | 9.0% | 52.8% |
| Custer city | 2,148 | $80,188 | $229,500 | 30.1% | 9.8% |
| Green Valley CDP | 1,503 | $78,801 | $232,100 | 19.0% | 20.1% |
| Webster city | 1,823 | $55,074 | $122,200 | 16.7% | 15.1% |
Population Overview
Groton city is a small community located in South Dakota, within Brown County. The total population is 1,794. It ranks as the 48th most populous out of 439 cities and towns in South Dakota.
Age Demographics
The median age in Groton city is 34.0 years. This is 10% lower than the state median of 37.7 years. With 29.5% of the population under 18, Groton city has a notably young demographic profile, suggesting a family-oriented community.
Economy, Income & Housing
The median household income in Groton city is $82,083. This is 13% higher than the state median of $72,421. Compared to the national median of $78,538, household income here is 5% higher. The poverty rate stands at 3.9%. This is 68% lower than the state poverty rate of 12.0%. This exceptionally low poverty rate indicates strong economic prosperity across the community. The unemployment rate is 0.7%. This is 75% lower than the state rate of 3.0%. The median home value is $173,000. Housing costs are 27% lower than the state median of $236,800. With a home-value-to-income ratio of just 2.1x, Groton city is one of the most affordable housing markets in the area. 76.3% of occupied housing units are owner-occupied. This homeownership rate is 11% higher than the state average of 68.6%.
Race & Ethnicity
Groton city has a predominantly White (non-Hispanic) population, comprising 90.6% of all residents. Hispanic or Latino residents account for 5.8%. The Asian population is significantly higher than the state average (2.4% vs 1.4%).
Education
31.2% of residents aged 25 and older hold a bachelor's degree or higher. This is about average than the state rate of 31.1%. Nationally, 35.0% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 96.4%.
Data Sources & Methodology
All demographic data for Groton city, South Dakota is sourced from the U.S. Census Bureau's American Community Survey (ACS) 5-Year Estimates (2019-2023). The ACS collects data from approximately 3.5 million households annually, providing reliable estimates for communities of all sizes. Comparisons are made against South Dakota state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 439 Census-designated places in South Dakota. For official data, visit data.census.gov.
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Frequently Asked Questions
What is the population of Groton city, South Dakota?
Groton city, South Dakota has a population of 1,794 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in Groton city, SD?
The median household income in Groton city is $82,083, which is 5% higher the national median of $78,538.
What is the poverty rate in Groton city, SD?
The poverty rate in Groton city is 3.9%. This means approximately 68 residents live below the federal poverty line.
What is the racial makeup of Groton city, South Dakota?
Groton city's population is 90.6% White, 0.0% Black, 5.8% Hispanic/Latino, and 2.4% Asian.
What is the median home value in Groton city, SD?
The median home value in Groton city is $173,000. The home-value-to-income ratio is 2.1x.
How educated is Groton city, South Dakota?
31.2% of adults (25+) in Groton city hold a bachelor's degree or higher, and 9.9% hold a graduate or professional degree.