1 definition found castorland - U.S. Gazetteer (1990) : Castorland, NY (village, FIPS 12881) Location: 43.88425 N, 75.51765 W Population (1990): 292 (102 housing units) Area: 0.7 sq km (land), 0.0 sq km (water) Zip code(s): 13620