Discover the cities associated with a certain area or zip code, or enter a city name and state to learn its area code and population.

Offers a reference tool for international calling codes and dialing plans. Browse the code breakouts for country, city, area, and cellular-phone numbers.

Features a database of US and Canadian area and postal codes. Provides a distance calculator between area codes.

North American area code tables list codes and states in alphabetical and numerical order. Includes major cities and time zones for each code.

Official database of US and Canada telephone area codes provides maps and details of upcoming changes. Learn how new codes are determined.

Tables list US and Canada area codes by state, country. Also find lists of codes in numerical order and international calling codes.