In 2021, Barnwell County, SC had a population of 20.8k people with a median age of 41.3 and a median household income of $38,237. Between 2020 and 2021 the population of Barnwell County, SC declined from 21,170 to 20,801, a −1.74% decrease and its median household income grew from $37,572 to $38,237, a 1.77% increase.
The 5 largest ethnic groups in Barnwell County, SC are White (Non-Hispanic) (50.3%), Black or African American (Non-Hispanic) (45.9%), White (Hispanic) (1.08%), Black or African American (Hispanic) (0.731%), and Other (Hispanic) (0.649%).
None of the households in Barnwell County, SC reported speaking a non-English language at home as their primary shared language. This does not consider the potential multi-lingual nature of households, but only the primary self-reported language spoken by all members of the household.
99.2% of the residents in Barnwell County, SC are U.S. citizens.
In 2021, the median property value in Barnwell County, SC was $89,200, and the homeownership rate was 69.6%.
Most people in Barnwell County, SC drove alone to work, and the average commute time was 31.7 minutes. The average car ownership in Barnwell County, SC was 2 cars per household.