Have you ever wondered which U.S. state includes the telephone area code 603? The answer is New Hampshire! Area code 603 covers the entire state of New Hampshire, including cities such as Manchester, Nashua, Concord, and Portsmouth.

New Hampshire is known for its picturesque landscapes, charming small towns, and rich history. It is also home to the famous White Mountains, which offer a variety of outdoor activities such as hiking, skiing, and leaf-peeping in the fall.

If you're planning a trip to New Hampshire and need to make a call within the state or receive calls from the 603 area code, be sure to have your phone handy. You can also check out Area Code Help for more information on area code 603 and its coverage.

Whether you're a resident of New Hampshire or just passing through, knowing the area code for the state can come in handy. It's always good to be prepared, especially when it comes to making phone calls and staying connected while on the go.

So next time you see a phone number with the area code 603, you'll know that it's from the beautiful state of New Hampshire. And if you ever find yourself in need of more information about area codes or anything else related to telecommunications, don't hesitate to do some research online or reach out to a local provider for assistance.

Stay connected and informed, and enjoy all that New Hampshire has to offer with area code 603!

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