106 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 11706 | Bay Shore | 68,648 |
| 11746 | Huntington Station | 66,883 |
| 11772 | Patchogue | 45,006 |
| 11757 | Lindenhurst | 44,571 |
| 11743 | Huntington | 42,423 |
| 11704 | West Babylon | 40,285 |
| 11722 | Central Islip | 38,443 |
| 11779 | Ronkonkoma | 38,273 |
| 11787 | Smithtown | 34,656 |
| 11901 | Riverhead | 32,921 |
| 11735 | Farmingdale | 32,778 |
| 11763 | Medford | 30,235 |
| 11731 | East Northport | 29,891 |
| 11727 | Coram | 29,393 |
| 11725 | Commack | 29,050 |
| 11720 | Centereach | 28,669 |
| 11701 | Amityville | 28,174 |
| 11967 | Shirley | 27,266 |
| 11729 | Deer Park | 26,647 |
| 11741 | Holbrook | 26,356 |
| 11784 | Selden | 25,986 |
| 11795 | West Islip | 25,063 |
| 11776 | Port Jefferson Station | 23,629 |
| 11726 | Copiague | 21,940 |
| 11768 | Northport | 21,908 |
| 11937 | East Hampton | 21,806 |
| 11738 | Farmingville | 20,246 |
| 11790 | Stony Brook | 19,934 |
| 11747 | Melville | 19,826 |
| 11754 | Kings Park | 17,660 |
| 11733 | East Setauket | 17,403 |
| 11946 | Hampton Bays | 17,303 |
| 11703 | North Babylon | 17,205 |
| 11788 | Hauppauge | 17,092 |
| 11950 | Mastic | 16,944 |
| 11951 | Mastic Beach | 15,830 |
| 11780 | Saint James | 15,586 |
| 11782 | Sayville | 14,537 |
| 11767 | Nesconset | 14,495 |
| 11730 | East Islip | 14,376 |
| 11968 | Southampton | 14,263 |
| 11702 | Babylon | 14,002 |
| 11953 | Middle Island | 13,383 |
| 11742 | Holtsville | 13,194 |
| 11949 | Manorville | 13,159 |
| 11751 | Islip | 13,152 |
| 11778 | Rocky Point | 12,919 |
| 11764 | Miller Place | 12,530 |
| 11961 | Ridge | 12,436 |
| 11755 | Lake Grove | 11,953 |
| 11766 | Mount Sinai | 11,481 |
| 11740 | Greenlawn | 10,699 |
| 11716 | Bohemia | 9,750 |
| 11777 | Port Jefferson | 9,347 |
| 11713 | Bellport | 9,236 |
| 11769 | Oakdale | 9,031 |
| 11752 | Islip Terrace | 8,990 |
| 11792 | Wading River | 8,562 |
| 11705 | Bayport | 8,256 |
| 11934 | Center Moriches | 8,222 |
| 11963 | Sag Harbor | 8,114 |
| 11789 | Sound Beach | 7,447 |
| 11933 | Calverton | 6,784 |
| 11721 | Centerport | 6,620 |
| 11971 | Southold | 6,507 |
| 11786 | Shoreham | 6,348 |
| 11942 | East Quogue | 5,871 |
| 11940 | East Moriches | 5,508 |
| 11980 | Yaphank | 5,138 |
| 11952 | Mattituck | 4,749 |
| 11944 | Greenport | 4,744 |
| 11978 | Westhampton Beach | 4,376 |
| 11954 | Montauk | 4,073 |
| 11715 | Blue Point | 3,796 |
| 11796 | West Sayville | 3,715 |
| 11749 | Islandia | 3,581 |
| 11719 | Brookhaven | 3,300 |
| 11718 | Brightwaters | 3,185 |
| 11724 | Cold Spring Harbor | 2,956 |
| 11935 | Cutchogue | 2,946 |
| 11964 | Shelter Island | 2,858 |
| 11977 | Westhampton | 2,782 |
| 11955 | Moriches | 2,626 |
| 11941 | Eastport | 2,472 |
| 11976 | Water Mill | 2,447 |
| 11939 | East Marion | 1,741 |
| 11794 | Stony Brook | 1,519 |
| 11739 | Great River | 1,191 |
| 11957 | Orient | 1,152 |
| 11960 | Remsenburg | 1,037 |
| 11958 | Peconic | 864 |
| 11948 | Laurel | 775 |
| 11932 | Bridgehampton | 696 |
| 11930 | Amagansett | 689 |
| 11959 | Quogue | 576 |
| 11962 | Sagaponack | 546 |
| 11970 | South Jamesport | 468 |
| 11975 | Wainscott | 423 |
| 11965 | Shelter Island Heights | 421 |
| 11972 | Speonk | 309 |
| 11956 | New Suffolk | 293 |
| 11947 | Jamesport | 248 |
| 11770 | Ocean Beach | 124 |
| 6390 | Fishers Island | 53 |
| 11973 | Upton | 42 |
| 11931 | Aquebogue | 24 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 106 ZCTAs in Suffolk County, New York (US Census).