[3] The county is named in honor of Pocahontas, the famous Native American woman from Jamestown, Virginia.

[12] As of the census[13] of 2000, there were 8,662 people, 3,617 households, and 2,430 families residing in the county.

30.20% of all households were made up of individuals, and 17.80% had someone living alone who was 65 years of age or older.

The population ranking of the following table is based on the 2020 census of Pocahontas County.

After backing George W. Bush in 2000 and 2004, John McCain in 2008, and Mitt Romney in 2012 by sizable but not huge margins, Pocahontas County swung even further right in 2016.

Trump further increased these numbers in 2020, winning almost 74% of the county's vote and increasing his margin of victory to just under 50%, and did even better in 2024, earning more than 76% of the vote and winning by nearly 54%, both records for Pocahontas County for any candidate since the beginning of the 20th century.