Area codes 631 and 934 are the telephone area codes in the North American Numbering Plan (NANP) for Suffolk County, New York, on Long Island. Area code 631 was created in 1999 in a split of 516 …

Browse area code 631 phone numbers, prefixes and exchanges. The 631 area code serves New York, Farmingdale, New Hyde Park, Syosset, Westbury, covering 52 ZIP codes in 6 counties.

Jan 1, 2026 · 631 Area Code located in New York, including 79 cities, 2 counties, 1 time zone, map, Census demographics, and 757 active prefixes.

About area code 631: location, common spam callers, related area codes, and more. Includes 631 reverse phone lookup to identify spam callers.

3 days ago · Find out where 631 area code zone from, which states, counties and cities it covers. Get the most exact information on time zones here

Find 631 area code details including city, time zone, and map. Lookup area code 631 phone number, name, and location.

The 631 area code is a telephone area code serving Suffolk County, New York, on Long Island. To start a free reverse phone lookup, simply enter the full 10-digit number (including the 631 area code) …

Area code 631 can be found in New York servicing Suffolk County, the central and eastern part of Long Island. Area code 631 was put into service on November 1, 1999, and was created from a split of …

Area code 631 is located in New York. Get the area’s map, cities covered, current time, prefixes, and dialing instructions.

List of ZIP Codes in Area Code 631 ... List of Counties in Area Code 631 Suffolk County