Dallas -- U.S. County in Arkansas Population (2000): 9210 Housing Units (2000): 4401 Land area (2000): 667.420064 sq. miles (1728.609957 sq. km) Water area (2000): 0.741036 sq. miles (1.919275 sq. km) Total area (2000): 668.161100 sq. miles (1730.529232 sq. km) Located within: Arkansas (AR), FIPS 05 Location: 33.938130 N, 92.608187 W Headwords: Dallas Dallas, AR Dallas County Dallas County, AR