North American Area Code Map
Interactive map of every active NANP area code across the United States, Canada, and the Caribbean. Click any state or territory to see all area codes serving that region.
For specific area code coverage, visit the individual area code page (e.g., /area-code/212) for a city-level map embed.
How area codes are distributed across North America
The original 86 area codes assigned in 1947 covered the entire US and Canada with just one code per region. California had three (213, 415, 916); Texas had four (214, 512, 713, 915); New York had five (212, 315, 516, 518, 718). Today, those same three states have dozens — California alone has 38 codes, Texas has 28, and New York has 19.
The growth pattern has been: first a code covers an entire state or large region; then population growth and the rise of cell phones, pagers, fax machines, and VoIP lines exhaust the available prefixes; then regulators either split the code geographically (creating a new code for part of the territory) or overlay a new code on top of the existing one. California is an extreme example — its 38 codes are a mix of geographic splits (213 → 310 → 424, etc.) and overlays.
At the other extreme, 12 states still have just one area code each: Alaska (907), Delaware (302), Hawaii (808), Maine (207), Montana (406), New Hampshire (603), North Dakota (701), Rhode Island (401), South Dakota (605), Vermont (802), and Wyoming (307). Idaho joined the multi-code club in 2017 when 986 was overlaid on 208.