Hamlin County, South Dakota Demographics 2026

Population Overview

Hamlin County is located in South Dakota with a total population of 6,288. It is the 28th most populous county out of 66 in South Dakota. The county encompasses 6 Census-designated places.

Age Demographics

The median age in Hamlin County is 32.5 years. This is 14% lower than the state median of 37.7 years. With 33.2% of the population under 18, Hamlin County has a notably young demographic profile, suggesting a family-oriented community.

Economy, Income & Housing

The median household income in Hamlin County is $83,194. This is 15% higher than the state median of $72,421. Compared to the national median of $78,538, household income here is 6% higher. The poverty rate stands at 6.6%. This is 45% lower than the state poverty rate of 12.0%. The unemployment rate is 1.8%. This is 39% lower than the state rate of 3.0%. The median home value is $207,700. Housing costs are 12% lower than the state median of $236,800. With a home-value-to-income ratio of just 2.5x, Hamlin County is one of the most affordable housing markets in the area. 81.5% of occupied housing units are owner-occupied. This homeownership rate is 19% higher than the state average of 68.6%.

Race & Ethnicity

Hamlin County has a predominantly White (non-Hispanic) population, comprising 91.8% of all residents. Hispanic or Latino residents account for 5.4%. The Black or African American population (0.3%) is well below the state average of 2.2%. The Asian population (0.2%) is well below the state average of 1.4%.

Education

24.4% of residents aged 25 and older hold a bachelor's degree or higher. This is 21% 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 92.6%.