Where is area code 603?

Area code question: Where is area code 603? Did someone call you with an area code 603 and you want to know where they are calling from? Is the number on your Caller ID showing area code 603 and you are wondering where that person or business is located?

The location of area code 603 is

New Hampshire

In other words, individuals and businesses with a telephone number that has the area code 603 may be from New Hampshire.

There are many instances where someone with area code 603 is not actually calling from New Hampshire. They may have moved from New Hampshire, but not bothered changing their cell phone number or they may have ported their number from New Hampshire to another state.

Furthermore, there are ways for "businesses" and individuals to get a phone number with area code 603, even though they are not located in or calling from New Hampshire.

Thus, the 603 area code belongs to New Hampshire, but these days that does not necessarily mean that the caller is from New Hampshire or located in New Hampshire.

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Where is area code 604?
Now you know that the area code 603 is for New Hampshire. Go here for the next area code on our list.