1 definition found fort cobb - U.S. Gazetteer (1990) : Fort Cobb, OK (town, FIPS 27100) Location: 35.10001 N, 98.44142 W Population (1990): 663 (316 housing units) Area: 1.0 sq km (land), 0.0 sq km (water) Zip code(s): 73038