Jefferson County, county in Arkansas, United States. As of 2020 county had an estimated population of 65,377 inhabitants. The county was created 193 years ago in 1829. Its county seat is "Pine Bluff".
There are 1 city/town in Jefferson County, AR. The largest city of Jefferson County is Pine Bluff with a population of 40,435.
Cities, Towns, Neighborhoods & Other Populated Places in Jefferson County.
|Pine Bluff||City in and county seat of Jefferson County, Arkansas||Jefferson||40,435|