781 Area Code is part of 5 counties in the state of Massachusetts. There are around 10 cities and 60 other places such as towns, cdps and villages in the 781 area code. Area code 781 is a telephone area code in the North American Numbering Plan (NANP) for the U.S. state of Massachusetts. 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.