1 definition found hampton bays - U.S. Gazetteer (1990) : Hampton Bays, NY (CDP, FIPS 31896) Location: 40.86204 N, 72.52441 W Population (1990): 7893 (5227 housing units) Area: 29.7 sq km (land), 24.8 sq km (water) Zip code(s): 11946