(west)
* Custer County (northwest)

Demographics

2020 census

As of the 2020 census, the county had a population of 26,945. Of the residents, 21.8% were under the age of 18 and 17.5% were 65 years of age or older; the median age was 40.1 years. For every 100 females there were 125.2 males, and for every 100 females age 18 and over there were 130.9 males.

The racial makeup of the county was 62.1% White, 2.6%

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