Dunn County, ND borders Stark near Killdeer metropolitan centre giving a 2020 estimated census population standing of 3,566 making it the 15th most populous county located hereabouts. Its county seat is Manning with other towns include Halliday & Dodge-Killdeer itself corresponds out to Dunn's largest city aside from acknowledged country seat. This area had been established from Stark and McKenzie Counties back in 1908 when local residents petitioned for new administrative boundaries - posthumously named after William A Dunn Wisconsin political figure representing region during period Theodore Roosevelt .