Kaufman County is a county in the northeastern area of the U.S. state of Texas. As of the 2020 census, its population was 145,310. Its county seat is Kaufman. Both the county, established in 1848, and the city were named for David S. Kaufman, a U.S. Representative and diplomat from Texas. Kaufman County is part of the Dallas-Fort Worth Metroplex. Western artist Frank Reaugh moved from Illinois to Kaufman County in 1876. There he was directly inspired for such paintings as The Approaching Herd.