Sisseton city, South Dakota Demographics & Population 2026

Population Overview

Sisseton city is a small community located in South Dakota, within Roberts County. The total population is 2,593. It ranks as the 33rd most populous out of 439 cities and towns in South Dakota.

Age Demographics

The median age in Sisseton city is 35.1 years. This is 7% lower than the state median of 37.7 years. With 29.5% of the population under 18, Sisseton city has a notably young demographic profile, suggesting a family-oriented community. 10.5% 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 Sisseton city is $44,477. This is 39% lower than the state median of $72,421. Compared to the national median of $78,538, household income here is 43% lower. The poverty rate stands at 22.0%. This is 84% higher than the state poverty rate of 12.0%. With more than one in five residents living below the poverty line, economic hardship is a significant challenge for the community. The unemployment rate is 6.6%. This is 120% higher than the state rate of 3.0%. The median home value is $111,900. Housing costs are 53% lower than the state median of $236,800. With a home-value-to-income ratio of just 2.5x, Sisseton city is one of the most affordable housing markets in the area. 49.8% of occupied housing units are owner-occupied. This homeownership rate is 27% lower than the state average of 68.6%.

Race & Ethnicity

Sisseton city is a highly diverse community where no single racial or ethnic group constitutes a majority of the population. Hispanic or Latino residents account for 4.6%. The Black or African American population (0.6%) is well below the state average of 2.2%. The Asian population (0.2%) is well below the state average of 1.4%.

Education

20.8% of residents aged 25 and older hold a bachelor's degree or higher. This is 33% 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 88.4%.

Data Sources & Methodology

All demographic data for Sisseton 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.