Area code 603 is the sole telephone area code in the North American Numbering Plan (NANP) for the U.S. state of New Hampshire. It was assigned as one of the 86 original North American area codes …

About area code 603: location, common spam callers, related area codes, and more. Includes 603 reverse phone lookup to identify spam callers.

Jan 1, 2026 · Area Code 603 is located in New Hampshire. It covers 163 cities, including Manchester, Nashua, Concord, Dover, and Rochester. It also covers 10 counties, including Hillsborough County, …

Area code 603 is located in New Hampshire. Get the area’s map, cities covered, current time, prefixes, and dialing instructions.

4 days ago · 603 is an area code located in the state of New Hampshire, US. The largest city it serves is Manchester. Find out where 603 area code zone from, which states, counties and cities it covers. …

Find 603 area code details including city, time zone, and map. Lookup area code 603 phone number, name, and location.

List of ZIP Codes in Area Code 603 ... List of Counties in Area Code 603 ... List of Major Cities/Towns in Area Code 603

Lookup information on Area Code 603 - get demographic, NPA NXX, and other data by area code

67.03% of residents in Area Code 603 16 and older are in the labor force. 3.83% of residents are unemployed. The median commute time of resident workers in Area Code 603 is 26.18 minutes.

Area code 603 is a telephone area code in the North American Numbering Plan (NANP) for the U.S. state of New Hampshire. Below you will find more info about Code and also zip codes, counties, …