Where is Zip Code 11749 map for 2020, 2019Primary Zip Codes for 11749Zip CodePrimary CitySecondary City11749IslandiaIslandia, Central Islip, Hauppauge, RonkonkomaCities sharing Zip Codes with 11749Zip CodePrimary CitySecondary CityMore Information11749IslandiaCentral Islip Central Islip population stats 11749IslandiaHauppauge Hauppauge population stats 11749IslandiaRonkonkoma Ronkonkoma population stats 11760IslandiaCentral Islip Central Islip population stats 11722Central IslipCentral Islip Central Islip population stats 11760IslandiaIslandia11779RonkonkomaRonkonkoma Ronkonkoma population stats 11788HauppaugeHauppauge Hauppauge population stats Advertisements