Area Code 603 — New Hampshire
Area code 603 is located in New Hampshire and operates on Eastern Time . The largest city served is Manchester .
Coverage Area
Area code 603 — New HampshireArea Code Details
- Area Code
- 603
- State / Province
- New Hampshire (NH)
- Country
- United States
- Time Zone
- Eastern Time Eastern Time
- Local Time Now
- —
- Status
- Active
- Code Type
- General Purpose Code
- In Service Since
- January 1, 1947
- Assigned
- January 1, 1947
- Population Served
- ~615,863 est.
Cities Served
Rate Centers & Exchanges
27 rate centers identified within area code 603
Nearby Area Codes
Frequently Asked Questions About Area Code 603
What state is area code 603?
Area code 603 is located in New Hampshire, United States.
Where is area code 603 from?
Area code 603 originates from New Hampshire. It operates in the Eastern Time zone.
What time zone is area code 603?
Area code 603 falls within the Eastern Time zone (Eastern Time).
What cities are in area code 603?
Area code 603 serves cities including Manchester, Nashua, Concord, East Concord, Derry Village, Dover, Rochester, Salem, and more.
Is a call from area code 603 a scam?
Area code 603 is a legitimate general purpose code area code serving New Hampshire. Like any area code, individual numbers using 603 can be used for scam calls — always verify the specific number if you receive an unexpected or suspicious call.