Eureka city, South Dakota Demographics & Population 2026
As of 2026, Eureka city, South Dakota has a total population of 946, the 87th largest city in South Dakota, with a median household income of $34,167, which is 53% lower than the state average. The poverty rate is 16.6%.
Key Takeaways
- Household income is 53% below the state average, indicating significant economic challenges.
- Housing is very affordable with a home-value-to-income ratio of just 2.0x.
- Near full employment with an unemployment rate of just 0.0%.
Eureka city Quick Facts
How Eureka 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+)
Eureka city Rankings in South Dakota
Explore South Dakota Rankings
Other Cities in McPherson County
| City | Population | Median Income | Poverty | Home Value |
|---|---|---|---|---|
| Leola city | 363 | $76,458 | 4.4% | $66,500 |
| Long Lake town | 17 | $58,438 | 11.8% | $28,800 |
| Wetonka town | 14 | N/A | 0.0% | N/A |
Cities Similar to Eureka city
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| Allen CDP | 860 | N/A | N/A | 0.0% | 34.4% |
| Lake Andes city | 934 | $45,714 | $46,700 | 23.4% | 34.6% |
| Agency Village CDP | 911 | $47,569 | $204,200 | 4.3% | 28.4% |
| Edgemont city | 845 | $42,440 | $81,100 | 18.0% | 25.8% |
| Piedmont city | 956 | $52,730 | $290,100 | 19.3% | 9.6% |
Population Overview
Eureka city is a small community located in South Dakota, within McPherson County. The total population is 946. It ranks as the 87th most populous out of 439 cities and towns in South Dakota.
Age Demographics
The median age in Eureka city is 58.7 years. This is 56% higher than the state median of 37.7 years. 24.2% of residents are 75 or older, suggesting a significant retirement-age population with implications for healthcare services and senior housing.
Economy, Income & Housing
The median household income in Eureka city is $34,167. This is 53% lower than the state median of $72,421. Compared to the national median of $78,538, household income here is 56% lower. The poverty rate stands at 16.6%. This is 38% higher than the state poverty rate of 12.0%. The unemployment rate is 0.0%. This is 100% lower than the state rate of 3.0%. The median home value is $69,800. Housing costs are 71% lower than the state median of $236,800. With a home-value-to-income ratio of just 2.0x, Eureka city is one of the most affordable housing markets in the area. 79.6% of occupied housing units are owner-occupied. This homeownership rate is 16% higher than the state average of 68.6%.
Race & Ethnicity
Eureka city has a predominantly White (non-Hispanic) population, comprising 93.1% of all residents. Black or African American residents account for 4.0%. The Black or African American population is significantly higher than the state average (4.0% vs 2.2%). The Hispanic or Latino population (0.4%) is well below the state average of 4.6%.
Education
20.3% of residents aged 25 and older hold a bachelor's degree or higher. This is 35% lower 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 77.2%.
Data Sources & Methodology
All demographic data for Eureka 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 Eureka city, South Dakota?
Eureka city, South Dakota has a population of 946 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in Eureka city, SD?
The median household income in Eureka city is $34,167, which is 56% lower the national median of $78,538.
What is the poverty rate in Eureka city, SD?
The poverty rate in Eureka city is 16.6%. This means approximately 141 residents live below the federal poverty line.
What is the racial makeup of Eureka city, South Dakota?
Eureka city's population is 93.1% White, 4.0% Black, 0.4% Hispanic/Latino, and 0.0% Asian.
What is the median home value in Eureka city, SD?
The median home value in Eureka city is $69,800. The home-value-to-income ratio is 2.0x.
How educated is Eureka city, South Dakota?
20.3% of adults (25+) in Eureka city hold a bachelor's degree or higher, and 6.4% hold a graduate or professional degree.