What are the US area codes for telephones?

Answer 1

There are about 300 area codes currently in use in the United States. The exact number depends whether you include U.S. territories like Guam and Puerto Rico, and whether you include non-geographic codes like 800/888/877/866/855 toll-free.

There are approximately 275 geographic area codes in use in the United States, and 13 which are not assigned to any particular area. Several states have only one area code assigned to them, while California has the most with 31.

Answer 2

There are 1,000 three-digit numbers, if you include every combination from 000 through 999. In North America, though, 3-digit area codes have significant restrictions. The first digit cannot be 0 or 1 and the second digit cannot be 9. Area codes of the form N11 are not allowed due to conflicts with short codes for things like emergency services (911) and TDD relay (711). Other area codes with the second and third digits the same (such as 800, 888, 844, and 900) are reserved as "easily remembered" codes. That brings the total down to 648 regular area codes plus 64 special "easily remembered" codes. Two of the potential regular area codes are in use for non-geographic purposes (area code 456 for international inbound 56K data communications, and area code 710 for special use by the U.S. federal government), and some of the "regular" codes will be assigned in the future for non-geographic use either as toll-free codes (after 800, 888, 877, 866, 855, 844, 833, and 822 are exhausted) or as PCS numbers (after 500, 533, 544, 566, 577, 588, and 522 are exhausted).

As of August 2014, there are 300 geographic codes in use in the United States, plus 6 in U.S. territories, 36 in Canada, and 20 in other countries and territories. There are 15 non-geographic codes in use throughout the NANP, plus one just for Canada.

Answer 3

There are about 300 geographic area codes in the United States, including U.S. territories in the Caribbean and the Pacific. There are about 30 area codes in Canada, and 20 more in various non-U.S. islands in or near the Caribbean, and over a dozen non-geographic codes (e.g., toll-free 800/888/877/866/855, premium 900, PCS 500/533/544/566, etc.).

Answer 4

The telephone country code for the United States is +1. Area codes are 3 digits, ranging from 201 to 989. There are about 300 area codes in the United States, so you will need to be more specific.

Answer 5

There are about 300 of them. Ask a more specific question.

Answer 6

There are several websites that list this information. See link.