Where is Area Code 603?
Area code 603 is exclusively assigned to the state of New Hampshire. It is a geographic area code that covers the entire state, serving a variety of regions, counties, and major cities. Here are some of the key areas covered by area code 603:
- Manchester
- Nashua
- Concord
- Derry
- Dover
- Rochester
- Salem
- Merrimack
- Londonderry
- Keene
For more information about the regions and services provided, visit the New Hampshire Public Utilities Commission.
New Hampshire Public Utilities Commission
21 South Fruit Street, Suite 10, Concord, NH 03301-2429
Phone: (603) 271-2431
Fax: (603) 271-3878
What time zone is 603 area code in the USA?
The 603 area code is located in the Eastern Time Zone (ET). This time zone observes daylight saving time, shifting from Eastern Standard Time (EST) to Eastern Daylight Time (EDT) during the warmer months. For accurate timekeeping, refer to the National Institute of Standards and Technology.
History of the 603 Area Code
The 603 area code was established in 1947 as one of the original area codes under the North American Numbering Plan (NANP). It has remained unchanged since its inception, with no splits or overlays, making it unique in its consistency. The stability of area code 603 is largely due to the population size and density of New Hampshire, which has not necessitated additional area codes. For more historical details, consult the North American Numbering Plan Administrator (NANPA).
NANPA Mailing Address
One Tower Center Boulevard
Suite 800
East Brunswick, NJ 08816
NANPA Customer Support
Tel: 1-866-623-2282
Email: support@nanpa.com
Fax: 571-363-3838
How Many People Use the 603 Area Code?
The 603 area code serves the entire state of New Hampshire, which has a population of 1,3 million according to the latest data from the U.S. Census Bureau. This population figure reflects the number of people who potentially use the 603 area code for their telecommunications needs.
U.S. Census Bureau
4600 Silver Hill Road, Washington, DC 20233
Tel: 301-763-INFO (4636) or 800-923-8282
Is the 603 Area Code Toll-Free?
Area code 603 is a geographic area code, not a toll-free number. It is specifically assigned to the state of New Hampshire and is used for local calls within the region. Toll-free numbers in the United States typically begin with the prefixes 800, 888, 877, 866, 855, 844, or 833. For more information on toll-free numbers and their operation, visit the Federal Communications Commission.
Federal Communications Commission
45 L Street NE, Washington, DC 20554
Tel: 1-888-CALL FCC (225-5322)
https://www.fcc.gov/