Spink County, South Dakota Demographics 2026

Population Overview

Spink County is located in South Dakota with a total population of 6,283. It is the 29th most populous county out of 66 in South Dakota. The county encompasses 10 Census-designated places.

Age Demographics

The median age in Spink County is 45.1 years. This is 20% higher than the state median of 37.7 years. 11.3% 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 Spink County is $73,011. This is about average than the state median of $72,421. Compared to the national median of $78,538, household income here is 7% lower. The poverty rate stands at 9.3%. This is 23% lower than the state poverty rate of 12.0%. The unemployment rate is 1.6%. This is 47% lower than the state rate of 3.0%. The median home value is $117,400. Housing costs are 50% lower than the state median of $236,800. With a home-value-to-income ratio of just 1.6x, Spink County is one of the most affordable housing markets in the area. 75.1% of occupied housing units are owner-occupied. This homeownership rate is 9% higher than the state average of 68.6%.

Race & Ethnicity

Spink County has a predominantly White (non-Hispanic) population, comprising 94.4% of all residents. Hispanic or Latino residents account for 2.6%. The Black or African American population (0.9%) is well below the state average of 2.2%.

Education

27.1% of residents aged 25 and older hold a bachelor's degree or higher. This is 13% 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 92.0%.