New Hampshire Area Code
The area code for New Hampshire is primarily 603, covering the entire state. Area codes are used in telecommunications to designate specific geographic regions for telephone numbers. It's important to note that area codes can change or new ones can be introduced over time to meet the demand for phone numbers in a given area.
| State | New Hampshire |
| State Abbreviation: | NH |
| State Nickname: | The Granite State Equality State |
| Capital City | Concord |
| Area Codes | 603 |
| Timezone | Eastern Time (ET) |
What time zone is New Hampshire?
New Hampshire, with the 603 area code, is in the Eastern Time Zone (ET). It follows Eastern Standard Time (EST) during Standard Time (UTC-5) and Eastern Daylight Time (EDT) during Daylight Saving Time (UTC-4).
Note that the start and end dates of daylight saving time can change
History
The history of New Hampshire's area code is relatively straightforward. Since its inception in 1947, the state has used the single area code, 603, to cover its entire territory. Over the years, this area code has remained unchanged, with no splits or overlays. As of my last knowledge update in September 2021, New Hampshire continued to use the 603 area code as its exclusive identifier, serving all of its telecommunications needs. Please note that area codes can change, so it's advisable to verify the current status if you need the most up-to-date information.
All Area Codes in New Hampshire
This table provides a quick overview of all area codes, their locations, and some historical context for each.
| Area Code | Location | History and Details |
|---|---|---|
| 603 | Entire New Hampshire | Covers the entire state of New Hampshire as the primary area code. |
Largest Cities in New Hampshire with area codes
Quick overview of large cities, their area codes, and some historical context for each in New Hampshire.
| Name | Area Code | History and Details |
|---|---|---|
| Manchester | 603 | New Hampshire's largest city and an economic hub. |
| Nashua | 603 | Second-largest city in New Hampshire, located in the south near the Massachusetts border. |
| Concord | 603 | The state capital of New Hampshire, centrally located within the state. |
| Derry | 603 | Located in Rockingham County, part of the Greater Boston metropolitan area. |
| Rochester | 603 | City situated in Strafford County in southeastern New Hampshire. |
| Salem | 603 | Town in Rockingham County known for its vibrant community and commercial presence. |
| Dover | 603 | City in Strafford County, notable for its historic downtown area. |
| Keene | 603 | Located in southwestern New Hampshire, known for its picturesque surroundings. |
| Portsmouth | 603 | Coastal city in Rockingham County, known for its historic waterfront and cultural attractions. |
| Laconia | 603 | Located in Belknap County, known for its scenic beauty and access to Lake Winnipesaukee. |