Area Code 631

Area Code 631
Post Office City: Holtsville, NY
County: Suffolk County County
Timezone: America/New_York
Coordinates: -73.04, 40.81
Area Code: 631

What is the Area Code?

In the United States, the "Area Code" is a numerical prefix used in phone numbers to identify a specific geographic region within the country. These area codes are part of the telephone numbering system and are essential for the proper routing of calls.

The area code typically consists of three digits and precedes the local phone number. For example, in the phone number (212) 555-1234, "212" is the area code that corresponds to a part of New York City.

Functions of the Area Code:

Geographic Identification: Allows the determination of the region or city from which a call originates. Call Routing: Helps telephone service providers direct calls efficiently through their network. Number Distribution: Facilitates the assignment and organization of phone numbers to avoid conflicts and duplications. Billing: Sometimes, call costs can vary depending on the area code, especially for long-distance calls. In summary, area codes are fundamental to the functioning of the telephone system in the United States, ensuring that calls are connected correctly and managed in an orderly manner.

631

Cities and counties within 631 Area Code

Here are the cities and towns for Area Code 631 that the US Post Office accepts. The city listed as the main city is usually where the main post office is located. When sending a letter or package, always include your preferred city to ensure your delivery is as successful as possible

Primary CityAceptable CitiesStateCountyZIPArea codesTimezone
Holtsville--New York(NY)Suffolk County00544631America/New_York
Fishers IslandFishers IsleNew York(NY)Suffolk County06390631America/New_York
New York--New York(NY)New York County10022212, 631, 646, 917, 914America/New_York
Glen OaksFloral ParkNew York(NY)Queens County11004631, 718, 516America/New_York
Great NeckGreat Nck Plz, Great Neck PlazaNew York(NY)Nassau County11021347, 516, 631, 718America/New_York
Brooklyn--New York(NY)Kings County11229631, 718, 917, 347America/New_York
Carle Place--New York(NY)Nassau County11514516, 718, 631America/New_York
Freeport--New York(NY)Nassau County11520516, 917, 631America/New_York
Garden CityGarden City S, Garden City South, Stewart ManorNew York(NY)Nassau County11530516, 631, 718America/New_York
HempsteadS Hempstead, South HempsteadNew York(NY)Nassau County11550516, 631, 212, 718America/New_York
West HempsteadW HempsteadNew York(NY)Nassau County11552631, 516America/New_York
MerrickN Merrick, North MerrickNew York(NY)Nassau County11566631, 516America/New_York
Old WestburyWestburyNew York(NY)Nassau County11568516, 631, 718America/New_York
Roosevelt--New York(NY)Nassau County11575631, 917, 516America/New_York
Westbury--New York(NY)Nassau County11590516, 631, 718America/New_York
AmityvilleAmity HarborNew York(NY)Suffolk County11701631, 516America/New_York
BabylonCaptree Is, Captree Island, Gilgo Beach, Oak Beach, Oak Island, W Gilgo Beach, West Gilgo BeachNew York(NY)Suffolk County11702516, 631, 212America/New_York
North BabylonBabylonNew York(NY)Suffolk County11703631, 516America/New_York
West BabylonBabylonNew York(NY)Suffolk County11704631, 516America/New_York
Bayport--New York(NY)Suffolk County11705631America/New_York
Bay ShoreFair Harbor, Kismet, Point O Woods, SaltaireNew York(NY)Suffolk County11706516, 631America/New_York
West BabylonBabylonNew York(NY)Suffolk County11707631America/New_York
Amityville--New York(NY)Suffolk County11708631America/New_York
Bellport--New York(NY)Suffolk County11713516, 631America/New_York
Blue Point--New York(NY)Suffolk County11715631America/New_York
Bohemia--New York(NY)Suffolk County11716631America/New_York
BrentwoodEdgewood, W Brentwood, West BrentwoodNew York(NY)Suffolk County11717631, 212, 516America/New_York
Brightwaters--New York(NY)Suffolk County11718631America/New_York
Brookhaven--New York(NY)Suffolk County11719631America/New_York
CentereachS Setauket, South SetauketNew York(NY)Suffolk County11720516, 631America/New_York
Centerport--New York(NY)Suffolk County11721631America/New_York
Central Islip--New York(NY)Suffolk County11722516, 631America/New_York
Cold Spring HarborCold Spg HbrNew York(NY)Suffolk County11724631, 516America/New_York
Commack--New York(NY)Suffolk County11725631, 516America/New_York
Copiague--New York(NY)Suffolk County11726631America/New_York
Coram--New York(NY)Suffolk County11727631America/New_York
Deer Park--New York(NY)Suffolk County11729631, 516America/New_York
East Islip--New York(NY)Suffolk County11730516, 631America/New_York
East NorthportE Northport, ElwoodNew York(NY)Suffolk County11731631, 516America/New_York
East SetauketSetauketNew York(NY)Suffolk County11733516, 631America/New_York
FarmingdaleS Farmingdale, South FarmingdaleNew York(NY)Nassau County11735631, 516America/New_York
Farmingville--New York(NY)Suffolk County11738631America/New_York
Great River--New York(NY)Suffolk County11739516, 631America/New_York
Greenlawn--New York(NY)Suffolk County11740516, 631America/New_York
Holbrook--New York(NY)Suffolk County11741631, 516America/New_York
Holtsville--New York(NY)Suffolk County11742631America/New_York
HuntingtonHalesite, Lloyd HarborNew York(NY)Suffolk County11743516, 631America/New_York
Huntington StationDix Hills, Huntingtn StaNew York(NY)Suffolk County11746516, 631, 212America/New_York
MelvilleHuntingtn Sta, Huntington StationNew York(NY)Suffolk County11747516, 631America/New_York
IslandiaCentral Islip, Hauppauge, RonkonkomaNew York(NY)Suffolk County11749631, 516America/New_York
Huntington StationHuntingtn Sta, MelvilleNew York(NY)Suffolk County11750631America/New_York
Islip--New York(NY)Suffolk County11751516, 631America/New_York
Islip Terrace--New York(NY)Suffolk County11752631America/New_York
Kings Park--New York(NY)Suffolk County11754631America/New_York
Lake Grove--New York(NY)Suffolk County11755631, 516America/New_York
Levittown--New York(NY)Nassau County11756631, 516, 917America/New_York
Lindenhurst--New York(NY)Suffolk County11757516, 631America/New_York
MassapequaN Massapequa, North MassapequaNew York(NY)Nassau County11758516, 631America/New_York
Islandia--New York(NY)Suffolk County11760631America/New_York
Medford--New York(NY)Suffolk County11763631America/New_York
Miller Place--New York(NY)Suffolk County11764631America/New_York
Mount Sinai--New York(NY)Suffolk County11766516, 631America/New_York
Nesconset--New York(NY)Suffolk County11767631America/New_York
NorthportFort SalongaNew York(NY)Suffolk County11768631America/New_York
Oakdale--New York(NY)Suffolk County11769516, 631America/New_York
Ocean Beach--New York(NY)Suffolk County11770631America/New_York
Oyster Bay--New York(NY)Nassau County11771631, 516America/New_York
PatchogueDavis Park, E Patchogue, East PatchogueNew York(NY)Suffolk County11772631, 917, 516America/New_York
Melville--New York(NY)Suffolk County11775631America/New_York
Port Jefferson StationPort Jeff StaNew York(NY)Suffolk County11776516, 631America/New_York
Port JeffersonPort Jeff Sta, Port Jefferson Station, Prt JeffersonNew York(NY)Suffolk County11777516, 631, 917America/New_York
Rocky Point--New York(NY)Suffolk County11778631America/New_York
RonkonkomaLake Ronkonkoma, Lk RonkonkomaNew York(NY)Suffolk County11779516, 631America/New_York
Saint James--New York(NY)Suffolk County11780631America/New_York
SayvilleCherry Grove, Fire Is Pines, Fire Island PinesNew York(NY)Suffolk County11782631, 516America/New_York
Seaford--New York(NY)Nassau County11783516, 631America/New_York
Selden--New York(NY)Suffolk County11784631America/New_York
Shoreham--New York(NY)Suffolk County11786516, 631America/New_York
Smithtown--New York(NY)Suffolk County11787631America/New_York
HauppaugeSmithtownNew York(NY)Suffolk County11788516, 631America/New_York
Sound Beach--New York(NY)Suffolk County11789631America/New_York
Stony Brook--New York(NY)Suffolk County11790631America/New_York
Syosset--New York(NY)Nassau County11791516, 845, 631America/New_York
Wading River--New York(NY)Suffolk County11792516, 631America/New_York
Wantagh--New York(NY)Nassau County11793631, 516America/New_York
Stony Brook--New York(NY)Suffolk County11794631America/New_York
West Islip--New York(NY)Suffolk County11795631America/New_York
West Sayville--New York(NY)Suffolk County11796631America/New_York
Woodbury--New York(NY)Nassau County11797516, 203, 631America/New_York
WyandanchWheatley Heights, Wheatley HtsNew York(NY)Suffolk County11798631America/New_York
RiverheadFlandersNew York(NY)Suffolk County11901631, 516America/New_York
Amagansett--New York(NY)Suffolk County11930631America/New_York
Aquebogue--New York(NY)Suffolk County11931631America/New_York
Bridgehampton--New York(NY)Suffolk County11932631, 516America/New_York
CalvertonBaiting Hollo, Baiting HollowNew York(NY)Suffolk County11933631America/New_York
Center MorichesCtr MorichesNew York(NY)Suffolk County11934631America/New_York
Cutchogue--New York(NY)Suffolk County11935631America/New_York
East Hampton--New York(NY)Suffolk County11937631, 516America/New_York
East Marion--New York(NY)Suffolk County11939917, 631America/New_York
East Moriches--New York(NY)Suffolk County11940631America/New_York
Eastport--New York(NY)Suffolk County11941631America/New_York
East Quogue--New York(NY)Suffolk County11942631America/New_York
Greenport--New York(NY)Suffolk County11944631, 516America/New_York
Hampton Bays--New York(NY)Suffolk County11946516, 631America/New_York
Jamesport--New York(NY)Suffolk County11947631America/New_York
Laurel--New York(NY)Suffolk County11948631America/New_York
Manorville--New York(NY)Suffolk County11949631America/New_York
Mastic--New York(NY)Suffolk County11950516, 631America/New_York
Mastic Beach--New York(NY)Suffolk County11951631America/New_York
Mattituck--New York(NY)Suffolk County11952631America/New_York
Middle Island--New York(NY)Suffolk County11953631America/New_York
Montauk--New York(NY)Suffolk County11954516, 631America/New_York
Moriches--New York(NY)Suffolk County11955631America/New_York
New Suffolk--New York(NY)Suffolk County11956631America/New_York
Orient--New York(NY)Suffolk County11957631America/New_York
Peconic--New York(NY)Suffolk County11958631America/New_York
Quogue--New York(NY)Suffolk County11959631America/New_York
Remsenburg--New York(NY)Suffolk County11960631America/New_York
Ridge--New York(NY)Suffolk County11961516, 631America/New_York
Sagaponack--New York(NY)Suffolk County11962631America/New_York
Sag Harbor--New York(NY)Suffolk County11963631America/New_York
Shelter IslandShelter IsNew York(NY)Suffolk County11964631America/New_York
Shelter Island HeightsShelter Is HtNew York(NY)Suffolk County11965631America/New_York
ShirleyE Yaphank, East Yaphank, Smith PointNew York(NY)Suffolk County11967631, 516America/New_York
Southampton--New York(NY)Suffolk County11968516, 631America/New_York
Southampton--New York(NY)Suffolk County11969631America/New_York
South JamesportS JamesportNew York(NY)Suffolk County11970631America/New_York
Southold--New York(NY)Suffolk County11971631America/New_York
Speonk--New York(NY)Suffolk County11972631America/New_York
Upton--New York(NY)Suffolk County11973631America/New_York
Wainscott--New York(NY)Suffolk County11975631America/New_York
Water Mill--New York(NY)Suffolk County11976631America/New_York
Westhampton--New York(NY)Suffolk County11977631America/New_York
Westhampton BeachW Hampton BchNew York(NY)Suffolk County11978631America/New_York
Yaphank--New York(NY)Suffolk County11980631America/New_York
Clintondale--New York(NY)Ulster County12515631, 845America/New_York