US Area Code Map

Explore US telephone area code map showing different area codes with their respective areas with boundaries on the map of the United States. The United States is divided into numerous area codes, each representing specific geographic regions for telephone services. The first area code system, introduced in 1947, included 86 original codes. Today, there are over 300 area codes, with California having the most, at 36. New York City is covered by multiple area codes, including 212, one of the original codes, and newer additions like 646 and 332. Area codes help manage the vast number of phone numbers needed across the country, ensuring efficient and organized telecommunications.

About US Area Code Map

Explore US telephone area code Map showing all the dialing area codes used in United States to make telephone calls.

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List of Area Codes in the United States

S.N.	US State	Area Codes
1	Alabama	205, 251, 256, 334, 659, 938
2	Alaska	907
3	Arizona	480, 520, 602, 623, 928
4	Arkansas	327, 479, 501, 870
5	California	209, 213, 279, 310, 323, 341, 350, 369, 408, 415, 424, 442, 510, 530, 559, 562, 619, 626, 628, 650, 657, 661, 669, 707, 714, 738, 747, 760, 805, 818, 820, 831, 840, 858, 909, 916, 925, 949, 951
6	Colorado	303, 719, 720, 970, 983
7	Connecticut	203, 475, 860, 959
8	Delaware	302
9	District of Columbia	202, 771
10	Florida	239, 305, 321, 324, 352, 386, 407, 448, 561, 645, 656, 689, 727, 728, 754, 772, 786, 813, 850, 863, 904, 941, 954
11	Georgia	229, 404, 470, 478, 678, 706, 762, 770, 912, 943
12	Hawaii	808
13	Idaho	208, 986
14	Illinois	217, 224, 309, 312, 331, 447, 464, 618, 630, 708, 730, 773, 779, 815, 847, 861, 872
15	Indiana	219, 260, 317, 463, 574, 765, 812, 930
16	Iowa	319, 515, 563, 641, 712
17	Kansas	316, 620, 785, 913
18	Kentucky	270, 364, 502, 606, 859
19	Louisiana	225, 318, 337, 457, 504, 985
20	Maine	207
21	Maryland	227, 240, 301, 410, 443, 667
22	Massachusetts	339, 351, 413, 508, 617, 774, 781, 857, 978
23	Michigan	231, 248, 269, 313, 517, 586, 616, 679, 734, 810, 906, 947, 989
24	Minnesota	218, 320, 507, 612, 651, 763, 924, 952
25	Mississippi	228, 601, 662, 769
26	Missouri	235, 314, 417, 557, 573, 636, 660, 816, 975
27	Montana	406
28	Nebraska	308, 402, 531
29	Nevada	702, 725, 775
30	New Hampshire	603
31	New Jersey	201, 551, 609, 640, 732, 848, 856, 862, 908, 973
32	New Mexico	505, 575
33	New York	212, 315, 329, 332, 347, 363, 516, 518, 585, 607, 624, 631, 646, 680, 716, 718, 838, 845, 914, 917, 929, 934
34	North Carolina	252, 336, 472, 704, 743, 828, 910, 919, 980, 984
35	North Dakota	701
36	Ohio	216, 220, 234, 283, 326, 330, 380, 419, 436, 440, 513, 567, 614, 740, 937
37	Oklahoma	405, 539, 572, 580, 918
38	Oregon	458, 503, 541, 971
39	Pennsylvania	215, 223, 267, 272, 412, 445, 484, 570, 582, 610, 717, 724, 814, 835, 878
40	Rhode Island	401
41	South Carolina	803, 821, 839, 843, 854, 864
42	South Dakota	605
43	Tennessee	423, 615, 629, 731, 865, 901, 931
44	Texas	210, 214, 254, 281, 325, 346, 361, 409, 430, 432, 469, 512, 682, 713, 726, 737, 806, 817, 830, 832, 903, 915, 936, 940, 945, 956, 972, 979
45	Utah	385, 435, 801
46	Vermont	802
47	Virginia	276, 434, 540, 571, 686, 703, 757, 804, 826, 948
48	Washington	206, 253, 360, 425, 509, 564
49	West Virginia	304, 681
50	Wisconsin	262, 274, 353, 414, 534, 608, 715, 920
51	Wyoming	307

US Area Codes

Area codes in the United States are an essential part of the country's telecommunications infrastructure, enabling efficient routing of phone calls across its vast geographic expanse. The concept of area codes was introduced by AT&T and the Bell System in 1947, forming the basis of the North American Numbering Plan (NANP). Initially, the system included 86 area codes, designed to streamline long-distance dialing and manage the increasing demand for telephone numbers.

Today, the United States has over 300 area codes, reflecting the country's growth and technological advancements in telecommunications. These area codes are three-digit numbers that precede the seven-digit local phone number, forming a 10-digit dialing format necessary for making long-distance calls within the NANP.

Historical Context and Development

The first area codes were distributed based on population density and call traffic. For instance, New York City received the 212 area code, one of the most recognizable codes due to its early adoption and association with the city's dense population and high call volume. Other major cities like Los Angeles (213), Chicago (312), and Dallas (214) also received low-numbered area codes to simplify the dialing process on rotary phones, where lower numbers required fewer pulses.

As the demand for phone numbers grew, particularly with the advent of mobile phones, the need for additional area codes became apparent. The introduction of new area codes can occur through methods such as geographic splits or overlays. A geographic split divides a region into two or more areas, each with its own code, while an overlay adds another area code to the same geographic region, requiring 10-digit dialing for local calls.

Key Area Codes and Their Significance

California has the highest number of area codes, with 36, reflecting its large population and economic activity. The state's original area codes, such as 213 for Los Angeles and 415 for San Francisco, have been supplemented by numerous overlays to accommodate growing demand. For example, Los Angeles now includes area codes like 323, 424, and 818.

New York City is another example of a region with multiple area codes. The original 212 area code has been supplemented by 718, 917, 646, 347, and the more recent 929 and 332. These additional codes were necessary to handle the city's massive population and the proliferation of mobile phones and other communication devices.

Area Codes Across the United States

The Midwest, known for its significant urban and rural mix, features area codes like 312 and 773 for Chicago, 313 for Detroit, and 216 for Cleveland. These codes cover major metropolitan areas that serve as economic and cultural hubs within the region.

The South, with its unique blend of historic cities and growing metropolitan areas, includes area codes like 404 for Atlanta, 305 for Miami, and 504 for New Orleans. These codes highlight the region's diverse demographic and economic landscape.

In the Southwest, area codes such as 602 for Phoenix, 214 for Dallas, and 713 for Houston reflect the rapid growth and urbanization in these areas. Texas, due to its size and population, has numerous area codes, including 210 for San Antonio, 512 for Austin, and 817 for Fort Worth.

Modern Challenges and Solutions

As technology evolves, the telecommunications industry faces ongoing challenges in managing and allocating area codes. The rise of Voice over Internet Protocol (VoIP) services, mobile phones, and other communication technologies increases the demand for new numbers. To address these challenges, the Federal Communications Commission (FCC) and the North American Numbering Plan Administration (NANPA) oversee the distribution and regulation of area codes.

In addition to managing new area codes, these agencies also work to prevent number exhaustion by implementing number conservation measures and encouraging the efficient use of existing numbers. For instance, number pooling allows multiple carriers to share a single block of numbers, reducing the need for new area codes.