Learn about the 631 area code, including its location, cities, time zone, introduction date, and related area codes.
631 Area Code Details
Major Cities in the 631 Area Code
The 631 area code is associated with the following cities and communities:
- Brentwood
- Centereach
- Central Islip
- Commack
- Copiague
- Coram
- Deer Park
- Dix Hills
- East Northport
- East Patchogue
- Hauppauge
- Holbrook
- Huntington Station
- Medford
- North Bay Shore
- North Lindenhurst
- Ronkonkoma
- Selden
- Shirley
- Smithtown
- West Babylon
- West Islip
Where Is Area Code 631 Located?
The 631 area code serves communities in New York. The exact communities and numbering assignments can change as telephone numbering resources are updated.
631 Area Code Time Zone
The 631 area code is associated with the Eastern time zone.
When Was 631 Area Code Introduced?
The 631 area code was introduced in 01-Nov-1999.
How to Call a 631 Area Code Number
For a call within the same numbering plan, dial the required local number according to your carrier’s dialing rules. For calls from outside the United States, use the United States country code (+1), followed by the area code and seven-digit telephone number.
Related Area Codes
631 Area Code FAQ
What state is 631 area code in?
The 631 area code is associated with New York.
What time zone is 631 area code in?
The 631 area code is associated with Eastern.
What cities use 631 area code?
Brentwood|Centereach|Central Islip|Commack|Copiague|Coram|Deer Park|Dix Hills|East Northport|East Patchogue|Hauppauge|Holbrook|Huntington Station|Medford|North Bay Shore|North Lindenhurst|Ronkonkoma|Selden|Shirley|Smithtown|West Babylon|West Islip
More Questions About Area Code 631
What state is area code 631 in?
Area code 631 is associated with New York.
What time zone is area code 631 in?
The listed time zone for area code 631 is Eastern.