To faciltiate users, the United States of America is divided into regions known as Area Codes, corresponding to particular geographic telephone dialing areas.
An area code denotes the regional location of a phone number within the United States.
The Area Code table below shows an area codes each.
Area Code 631 listing, by city
@The cities listed with each area code are the major cities for that area code;
| City / State | Area code | Zip Code | County | Iso | |
|---|---|---|---|---|---|
| Amagansett (New York) | 631 | 11930 | Suffolk | US-NY | |
| Amityville (New York) | 631 | 11708 | Suffolk | US-NY | |
| Amityville (New York) | 631 | 11701 | Suffolk | US-NY | |
| Aquebogue (New York) | 631 | 11931 | Suffolk | US-NY | |
| Babylon (New York) | 631 | 11702 | Suffolk | US-NY | |
| Bay Shore (New York) | 631 | 11706 | Suffolk | US-NY | |
| Bayport (New York) | 631 | 11705 | Suffolk | US-NY | |
| Bellmore (New York) | 631 | 11710 | Nassau | US-NY | |
| Bellport (New York) | 631 | 11713 | Suffolk | US-NY | |
| Blue Point (New York) | 631 | 11715 | Suffolk | US-NY | |
| Bohemia (New York) | 631 | 11716 | Suffolk | US-NY | |
| Brentwood (New York) | 631 | 11717 | Suffolk | US-NY | |
| Bridgehampton (New York) | 631 | 11932 | Suffolk | US-NY | |
| Brightwaters (New York) | 631 | 11718 | Suffolk | US-NY | |
| Brookhaven (New York) | 631 | 11719 | Suffolk | US-NY | |
| Calverton (New York) | 631 | 11933 | Suffolk | US-NY | |
| Carle Place (New York) | 631 | 11514 | Nassau | US-NY | |
| Center Moriches (New York) | 631 | 11934 | Suffolk | US-NY | |
| Centereach (New York) | 631 | 11720 | Suffolk | US-NY | |
| Centerport (New York) | 631 | 11721 | Suffolk | US-NY | |
| Central Islip (New York) | 631 | 11722 | Suffolk | US-NY | |
| Cold Spring Harbor (New York) | 631 | 11724 | Suffolk | US-NY | |
| Commack (New York) | 631 | 11725 | Suffolk | US-NY | |
| Copiague (New York) | 631 | 11726 | Suffolk | US-NY | |
| Coram (New York) | 631 | 11727 | Suffolk | US-NY | |
| Cutchogue (New York) | 631 | 11935 | Suffolk | US-NY | |
| Deer Park (New York) | 631 | 11729 | Suffolk | US-NY | |
| East Hampton (New York) | 631 | 11937 | Suffolk | US-NY | |
| East Islip (New York) | 631 | 11730 | Suffolk | US-NY | |
| East Marion (New York) | 631 | 11939 | Suffolk | US-NY | |
| East Moriches (New York) | 631 | 11940 | Suffolk | US-NY | |
| East Northport (New York) | 631 | 11731 | Suffolk | US-NY | |
| East Quogue (New York) | 631 | 11942 | Suffolk | US-NY | |
| East Setauket (New York) | 631 | 11733 | Suffolk | US-NY | |
| Eastport (New York) | 631 | 11941 | Suffolk | US-NY | |
| Farmingdale (New York) | 631 | 11735 | Nassau | US-NY | |
| Farmingdale (New York) | 631 | 11737 | Nassau | US-NY | |
| Farmingville (New York) | 631 | 11738 | Suffolk | US-NY | |
| Fishers Island (New York) | 631 | 6390 | Suffolk | US-NY | |
| Great River (New York) | 631 | 11739 | Suffolk | US-NY | |
| Greenlawn (New York) | 631 | 11740 | Suffolk | US-NY | |
| Greenport (New York) | 631 | 11944 | Suffolk | US-NY | |
| Hampton Bays (New York) | 631 | 11946 | Suffolk | US-NY | |
| Hauppauge (New York) | 631 | 11788 | Suffolk | US-NY | |
| Hicksville (New York) | 631 | 11801 | Nassau | US-NY | |
| Holbrook (New York) | 631 | 11741 | Suffolk | US-NY | |
| Holtsville (New York) | 631 | 501 | Suffolk | US-NY | |
| Holtsville (New York) | 631 | 544 | Suffolk | US-NY | |
| Holtsville (New York) | 631 | 11742 | Suffolk | US-NY | |
| Huntington (New York) | 631 | 11743 | Suffolk | US-NY | |
| Huntington Station (New York) | 631 | 11746 | Suffolk | US-NY | |
| Huntington Station (New York) | 631 | 11750 | Suffolk | US-NY | |
| Islandia (New York) | 631 | 11760 | Suffolk | US-NY | |
| Islandia (New York) | 631 | 11749 | Suffolk | US-NY | |
| Islip (New York) | 631 | 11751 | Suffolk | US-NY | |
| Islip Terrace (New York) | 631 | 11752 | Suffolk | US-NY | |
| Jamesport (New York) | 631 | 11947 | Suffolk | US-NY | |
| Kings Park (New York) | 631 | 11754 | Suffolk | US-NY | |
| Lake Grove (New York) | 631 | 11755 | Suffolk | US-NY | |
| Laurel (New York) | 631 | 11948 | Suffolk | US-NY | |
| Lindenhurst (New York) | 631 | 11757 | Suffolk | US-NY | |
| Manorville (New York) | 631 | 11949 | Suffolk | US-NY | |
| Massapequa Park (New York) | 631 | 11762 | Nassau | US-NY | |
| Mastic (New York) | 631 | 11950 | Suffolk | US-NY | |
| Mastic Beach (New York) | 631 | 11951 | Suffolk | US-NY | |
| Mattituck (New York) | 631 | 11952 | Suffolk | US-NY | |
| Medford (New York) | 631 | 11763 | Suffolk | US-NY | |
| Melville (New York) | 631 | 11747 | Suffolk | US-NY | |
| Melville (New York) | 631 | 11775 | Suffolk | US-NY | |
| Middle Island (New York) | 631 | 11953 | Suffolk | US-NY | |
| Miller Place (New York) | 631 | 11764 | Suffolk | US-NY | |
| Montauk (New York) | 631 | 11954 | Suffolk | US-NY | |
| Moriches (New York) | 631 | 11955 | Suffolk | US-NY | |
| Mount Sinai (New York) | 631 | 11766 | Suffolk | US-NY | |
| Nesconset (New York) | 631 | 11767 | Suffolk | US-NY | |
| New Suffolk (New York) | 631 | 11956 | Suffolk | US-NY | |
| North Babylon (New York) | 631 | 11703 | Suffolk | US-NY | |
| Northport (New York) | 631 | 11768 | Suffolk | US-NY | |
| Oakdale (New York) | 631 | 11769 | Suffolk | US-NY | |
| Ocean Beach (New York) | 631 | 11770 | Suffolk | US-NY | |
| Old Bethpage (New York) | 631 | 11804 | Nassau | US-NY | |
| Orient (New York) | 631 | 11957 | Suffolk | US-NY | |
| Patchogue (New York) | 631 | 11772 | Suffolk | US-NY | |
| Peconic (New York) | 631 | 11958 | Suffolk | US-NY | |
| Plainview (New York) | 631 | 11803 | Nassau | US-NY | |
| Port Jefferson Station (New York) | 631 | 11776 | Suffolk | US-NY | |
| Quogue (New York) | 631 | 11959 | Suffolk | US-NY | |
| Remsenburg (New York) | 631 | 11960 | Suffolk | US-NY | |
| Ridge (New York) | 631 | 11961 | Suffolk | US-NY | |
| Riverhead (New York) | 631 | 11901 | Suffolk | US-NY | |
| Rocky Point (New York) | 631 | 11778 | Suffolk | US-NY | |
| Ronkonkoma (New York) | 631 | 11779 | Suffolk | US-NY | |
| Sag Harbor (New York) | 631 | 11963 | Suffolk | US-NY | |
| Sagaponack (New York) | 631 | 11962 | Suffolk | US-NY | |
| Saint James (New York) | 631 | 11780 | Suffolk | US-NY | |
| Sayville (New York) | 631 | 11782 | Suffolk | US-NY | |
| Seaford (New York) | 631 | 11783 | Nassau | US-NY | |
| Selden (New York) | 631 | 11784 | Suffolk | US-NY | |
| Shelter Island (New York) | 631 | 11964 | Suffolk | US-NY | |
| Shelter Island Heights (New York) | 631 | 11965 | Suffolk | US-NY | |
| Shirley (New York) | 631 | 11967 | Suffolk | US-NY | |
| Shoreham (New York) | 631 | 11786 | Suffolk | US-NY | |
| Smithtown (New York) | 631 | 11787 | Suffolk | US-NY | |
| Sound Beach (New York) | 631 | 11789 | Suffolk | US-NY | |
| South Jamesport (New York) | 631 | 11970 | Suffolk | US-NY | |
| Southampton (New York) | 631 | 11968 | Suffolk | US-NY | |
| Southampton (New York) | 631 | 11969 | Suffolk | US-NY | |
| Southold (New York) | 631 | 11971 | Suffolk | US-NY | |
| Speonk (New York) | 631 | 11972 | Suffolk | US-NY | |
| Stony Brook (New York) | 631 | 11790 | Suffolk | US-NY | |
| Stony Brook (New York) | 631 | 11794 | Suffolk | US-NY | |
| Upton (New York) | 631 | 11973 | Suffolk | US-NY | |
| Wading River (New York) | 631 | 11792 | Suffolk | US-NY | |
| Wainscott (New York) | 631 | 11975 | Suffolk | US-NY | |
| Wantagh (New York) | 631 | 11793 | Nassau | US-NY | |
| Water Mill (New York) | 631 | 11976 | Suffolk | US-NY | |
| West Babylon (New York) | 631 | 11707 | Suffolk | US-NY | |
| West Babylon (New York) | 631 | 11704 | Suffolk | US-NY | |
| West Islip (New York) | 631 | 11795 | Suffolk | US-NY | |
| West Sayville (New York) | 631 | 11796 | Suffolk | US-NY | |
| Westhampton (New York) | 631 | 11977 | Suffolk | US-NY | |
| Westhampton Beach (New York) | 631 | 11978 | Suffolk | US-NY | |
| Woodbury (New York) | 631 | 11797 | Nassau | US-NY | |
| Wyandanch (New York) | 631 | 11798 | Suffolk | US-NY | |
| Yaphank (New York) | 631 | 11980 | Suffolk | US-NY |