1 definition found east sandwich - U.S. Gazetteer (1990) : East Sandwich, MA (CDP, FIPS 20380) Location: 41.73835 N, 70.43457 W Population (1990): 3171 (1732 housing units) Area: 19.2 sq km (land), 0.1 sq km (water) Zip code(s): 02537