www.LongIslandHomeAndCondo.com , www.LongIslandNewConstruction.com ,   www.LIHorseProperty.com , www.LongIslandSeniorsHousing.com , www.LongIslandGolfProperties.com,   www.LIHomeAuction.com ,  www.LIWaterfrontProperties.com , &  www.PrudentialElliman.com ,  www.prudential.com/realestate . Bellmore Information Bellmore is a hamlet (and census-designated place ) in Nassau County , New York , United States . The population according to the 2000 census was 16,441. Bellmore is