Area code 914 is the telephone area code in the North American Numbering Plan (NANP) for Westchester County, New York.
Area code 251 is a telephone area code in the North American Numbering Plan (NANP) for southwestern Alabama, serving Mobile, Baldwin, and Washington counties and parts of six other counties. It was created on June 18, 2001, as a split from area code 334. In order to allow people time to reprogram electronics such as computers, cell phones, pagers and fax machines, use of the 334 area code continued in the 251 areas through January 7, 2002.
Area codes 516 and 363 are telephone overlay area codes in the North American Numbering Plan (NANP) for the U.S. state of New York. The numbering plan area (NPA) comprises Nassau County on Long Island. Area code 516 was created in 1951 and 363 was added to the numbering plan area in 2023.
Area code 907 is a telephone area code in the North American Numbering Plan (NANP) for the U.S. state of Alaska, except for the small southeastern community of Hyder, which uses area codes 236, 250, and 778 of neighboring Stewart, British Columbia.
Area codes 608 and 353 are telephone area codes in the North American Numbering Plan for much of southwestern Wisconsin, including the state capital city Madison. Area code 608 was assigned in 1955 to a numbering plan area created from areas with area code 414 and area code 715, and was the third area code created in Wisconsin. Rapid growth of the area, specifically in Dane County, brought the area code close to exhaustion of central office prefixes, with NANPA projections in 2022 projecting the need for relief by late 2023. In September 2022, the Wisconsin Public Service Commission and North American Numbering Plan Administrator (NANPA) announced an overlay complex for the numbering plan area with new area code 353, with an in-service date of September 15, 2023. New central office code orders were accepted starting on July 11, 2023, but activatlon is contingent on complete exhaustion of central office codes for 608.
Area code 928 is a telephone area code in the North American Numbering Plan for the U.S. state of Arizona. The numbering plan area comprises the northern, eastern, and western portions of the state. It includes Beaver Dam, the Grand Canyon, Flagstaff, Holbrook, Lake Havasu City, Littlefield, Kingman, Prescott, Sedona, Wickenburg, Winslow and Yuma, and also serves most of Greenlee County, some areas on the western and northern fringes of the Phoenix metropolitan area, such as Lake Pleasant Regional Park in Peoria, and the Arizona portion of the Navajo Nation.
Area code 302 is a telephone area code in the North American Numbering Plan (NANP) for the U.S. state of Delaware. It is Delaware's only area code, and was assigned in 1947 as one of the original North American area codes.
Area code 906 is the telephone area code in the North American Numbering Plan (NANP) for the Upper Peninsula of Michigan.
Area code 607 is a telephone area code in the North American Numbering Plan for the U.S. state of New York. It serves parts of its Southern Tier. It was created in 1954 by combining the southern portion of 315 and the eastern portion of 716. Initially, in the late 1940s, area codes with a middle digit of "0" (x0x-xxx-xxxx) were assigned only to jurisdictions covering an entire state. Along with 507 in Minnesota and 606 in Kentucky, 607 was among the first such area codes to be added to a jurisdiction.
Area code 509 is the telephone area code in the North American Numbering Plan (NANP) for the eastern part of the U.S. state of Washington. The numbering plan area (NPA) roughly comprises the state east of the Cascade Mountains, and includes Spokane, the Tri-Cities, Ellensburg, Yakima, Walla Walla, and Wenatchee. The area code was assigned in a split of area code 206 in 1956.
Area code 409 is a telephone area code in the North American Numbering Plan (NANP) for the U.S. state of Texas. The numbering plan area comprises the Beaumont and Galveston areas. It was created on March 19, 1983, in an area code split of area code 713, the first since 619 split from 714 four months earlier. Initially, it consisted of a horseshoe-shaped area that almost completely surrounded Houston, but in 2000 it was divided into three sections. Area code 409 was retained by the eastern segment, while the central portion, centered on Nacogdoches, received area code 936 and the western portion centered on Bryan–College Station, was assigned area code 979.
Area code 254 is a telephone area code in the North American Numbering Plan for the Waco/Temple/Killeen area in the U.S. state of Texas. It was created on May 25, 1997, in an area code split of area code 817.
Area code 319 is a telephone area code in the North American Numbering Plan (NANP) for the southeastern and east-central parts of the U.S. state of Iowa.
Area code 501 is a telephone area code in the North American Numbering Plan (NANP) for central Arkansas, including Little Rock and most of its suburbs. The numbering plan area (NPA) comprises most communities in Cleburne, Conway, Faulkner, Garland, Hot Spring, Lonoke, Perry, Pulaski, Saline, White and Van Buren counties.
Area codes 513 and 283 are telephone area codes in the North American Numbering Plan (NANP) for the southwest of the U.S. state of Ohio, including Cincinnati and surrounding cities, such as Forest Park, Hamilton, Lebanon, West Chester, Mason, Maineville, Middletown, Milford, Norwood, Oxford, Harrison, Cleves, Miamitown and Trenton.
Area code 719 is a telephone area code in the North American Numbering Plan (NANP) for the U.S. state of Colorado. The numbering plan area (NPA) includes Colorado Springs, Pueblo, Monument, Leadville, Alamosa, Monte Vista, the San Luis Valley, Cañon City, Trinidad, Rocky Ford, La Junta, Walsenburg and southeastern Colorado. It was created in a split of area code 303 on March 5, 1988. While 303 had been Colorado's sole area code for 40 years, the state's explosive growth in the second half of the 20th century made it apparent that the state would need another area code. 719 was split off when an impending number shortage meant the split could no longer be staved off.
Area code 970 is a telephone area code in the North American Numbering Plan (NANP) for most of the western and northern parts of the U.S. state of Colorado. The numbering plan area includes Aspen, Breckenridge, Durango, Estes Park, Fort Collins, Glenwood Springs, Grand Junction, Greeley, Loveland, Silverthorne, Steamboat Springs, and Vail. It was established on April 2, 1995 in an area code split of area code 303, which was retained by the Denver area.
Area codes 618 and 730 are telephone area codes in the North American Numbering Plan (NANP) for southern Illinois. The numbering plan area (NPA) comprises one hundred and twenty-six municipalities, such as Carbondale, Cairo, Belleville, East St. Louis, Edwardsville, Marion, O'Fallon, Alton, Mt. Vernon, Centralia, Herrin, Salem, Metropolis, Fairview Heights, Collinsville, and Granite City. Area code 618 was one of the original North American area codes created in 1947, and 730 was added to the plan area to form an overlay complex to satisfy the need for more telephone numbers in the region. The current population of the 618/730 area code is 1,288,816 people. It encompasses approximately 15,458 square mile ; and has a population density of 83.38 people per square mile.
Area code 731 is a telephone area code in the North American Numbering Plan (NANP) for the western part of the U.S. state of Tennessee.
Area code 575 is a telephone area code in the North American Numbering Plan (NANP) for the U.S. state of New Mexico. The area code was created in 2007 in an area code split of area code 505, whose service area was reduced to the Albuquerque, Santa Fe, Farmington, and Gallup regions to provide more telephone numbers to the most populated parts of the state. Area code 575 serves the rest of the state.
