631 Area Code is part of 2 counties in the state of New York. There are around 0 cities and 173 other places such as towns, cdps and villages in the 631 area code. Area code 631 is a telephone area code in the North American Numbering Plan (NANP) for the U.S. state of New York. Below you will find more info about Code and also zip codes, counties, cities and the post offices that belong to this Area Code.
Sources: North American Numbering Plan Administration (NANPA), telecom providers, and the U.S. Census Bureau.