Codington County, South Dakota Demographics 2026

Population Overview

Codington County is located in South Dakota with a total population of 28,767. It is the 7th most populous county out of 66 in South Dakota. The county encompasses 7 Census-designated places.

Age Demographics

The median age in Codington County is 40.4 years. This is 6% higher than the state median of 38.0 years.

Economy, Income & Housing

The median household income in Codington County is $72,727. This is 3% lower than the state median of $75,081. It is also 10% lower than the national median of $80,734. The poverty rate stands at 8.8%. This is 26% lower than the state poverty rate of 11.9%. The unemployment rate is 1.9%. This is 34% lower than the state rate of 2.9%. The median home value is $237,700. Housing costs are 8% lower than the state median of $257,400. The home-value-to-income ratio is 3.3x. 69.8% of occupied housing units are owner-occupied. This homeownership rate is 2% higher than the state average of 68.6%.

Race & Ethnicity

Codington County has a predominantly White (non-Hispanic) population, comprising 90.4% of all residents. Hispanic or Latino residents account for 3.3%. The Black or African American population (0.7%) is well below the state average of 2.1%. The Asian population (0.6%) is well below the state average of 1.4%.

Education

21.4% of residents aged 25 and older hold a bachelor's degree or higher. This is 33% lower than the state rate of 31.9%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 93.9%.

Data Sources & Methodology

All figures for Codington County come from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates, with comparisons drawn against South Dakota and national averages from the same dataset. See our methodology page for how each metric is defined, or data.census.gov for official tables with margins of error.