Roane County, TN (county, FIPS 145) Location: 35.84725 N, 84.52297 W Population (1990): 47227 (20334 housing units) Area: 935.0 sq km (land), 88.1 sq km (water) Roane County, WV (county, FIPS 87) Location: 38.71548 N, 81.35836 W Population (1990): 15120 (6611 housing units) Area: 1252.6 sq km (land), 0.5 sq km (water)