Area code 603 - Wikipedia
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 …
603 area code — information, time zone, map
6 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 …
603 Area Code - Location, Time, Map, Cities and Census Data
6 days ago · 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 …
603 Area Code: Complete Location Info, Time Zone
Nov 22, 2025 · Area code 603 is in New Hampshire, USA , spanning 10 counties and serving 257 cities , including Manchester, Nashua or Concord; it currently uses 752 prefixes , assigned …
603 Area Code - Map, Phone Lookup, Time Zone - Wirefly
Find 603 area code details including city, time zone, and map. Lookup area code 603 phone number, name, and location.
603 Area Code - Location, Map, Current Time, Prefixes
Area code 603 is located in New Hampshire. Get the area’s map, cities covered, current time, prefixes, and dialing instructions.
Where Is The 603 Area Code Located? City Guide | State | Location
Area code 603 is the area code for the entire state of New Hampshire. Created as one of the original area codes, area code 603 was put into service on January 1, 1947. Area code 603 is …
603 Area Code: Location, Time Zone & Phone Lookup - NumLooker
Area code 603 covers the entire state of New Hampshire. It is the only area code that serves the area. This page contains every detail in searching for phone numbers via the area code 603. …
603 Area Code - Manchester, NH | TeraCodes
603 area code information for Manchester, New Hampshire. Timezone, overlay codes, and more.
Area Code 603 - Map, time zone, and phone lookup - CallerCenter
About area code 603: location, common spam callers, related area codes, and more. Includes 603 reverse phone lookup to identify spam callers.