Pope County is a county in the U.S. state of Arkansas. As of the 2020 census, the population was 63,381. The county seat is Russellville. The county was formed on November 2, 1829, from a portion of Crawford County and named for John Pope, the third governor of the Arkansas Territory. Pope County was the nineteenth county formed. The county's borders changed eighteen times in the 19th century with the creation of new counties and adjustments between counties.