| Islip | East Islip | Central Islip | West Islip | Islip Terrace |
| Atlantique | Brightwaters | Bay Shore | Bayport | Bohemia |
| Brentwood | Captree Islands | Dunewood | Fair Hairbor |
| Hauppauge | Holbrook | Holtsville | Islandia | Kismet |
| Lake Ronkonkoma | Lakeland |
| North Bay Shore | North Great River | Ocean Beach | Oakdale |
| Ronkonkoma | Saltaire | Sayville | Seaview |
| West Bay Shore | West Sayville |