Area codes 920 and 274 are telephone area codes in the North American Numbering Plan (NANP) for a large area of eastern Wisconsin. Area code 920 was created on July 26, 1997, in a split of area code 414, one of the original North American area codes of 1947. 274 was added to the same numbering plan area (NPA) on May 5, 2023 to create an area code overlay.
The 920/274 area code covers most of Northeast Wisconsin including Green Bay and the Fox Cities as well as the far northern and eastern exurban areas of the Madison MSA and far northern and western portions of the Milwaukee CSA
When the American Telephone and Telegraph Company (AT&T) divided the North American continent into the original eighty-six numbering plan areas (NPAs) for the first nationwide telephone numbering plan in 1947, Wisconsin received two area codes, 414 for the south and northeast, and 715, for the northern part.
On November 22, 1996, Ameritech notified Bellcore, the North American Numbering Plan Administration (NANPA), that demand for telephone numbers had rapidly increased in the eastern part of the state, so that a jeopardy condition existed in which mitigation could not be provided early enough to avoid exhaustion of the numbering pool. [1]
On January 15, 1997, the NANP announced a split of the numbering plan area to create the new area code 920, [2] in which Milwaukee and the surrounding communities south of the city would retain the existing area code, and the northern portion of the numbering plan area would receive 920. The split became effective on July 26, 1997, and a permissive dialing period ended on October 25, 1997. [3]
In 2008, service providers recognized the need for a second area code for northeastern Wisconsin, leading the Public Service Commission of Wisconsin to approve an overlay plan with new area code 274. [4] [5] The effective date for the new area code was announced as March 10, 2012. However, on December 22, 2010, PSC ordered a postponement of the plan due to new exhaustion forecasts for 2014. [6] The Great Recession, number porting, a decline in landlines, and other factors delayed that requirement for fifteen years during which implementation was deferred several times. [7] [8]
Prior to October 2021, area code 920 had telephone numbers assigned for the central office code 988. In 2020, 988 was designated nationwide as a dialing code for the National Suicide Prevention Lifeline, which created a conflict because area code 920 permitted seven-digit dialing. 920 transitioned to ten-digit dialing on October 24, 2021. [9] On December 8, 2008, the Public Service Commission finally approved an all-services distributed overlay as the relief method for NPA 920 and on March 16, 2022, the NANPA established the timeline for installation, setting the in-service date of area code 274 to March 22, 2024. Only months later, based on new exhaustion studies, [10] this timeline was revised to May 5, 2023. [11]
The area code serves the following counties:
This includes the following towns and cities:
Area code 920 was commonly remembered by using the mnemonic device of the late Green Bay Packer Reggie White's jersey number, 92, adding a zero. [12]
Area codes 314 and 557 are telephone area codes in the North American Numbering Plan (NANP) in the U.S. state of Missouri, serving the city of St. Louis and most of its inner-ring suburbs in neighboring St. Louis County. The numbering plan area is bordered to the west by area code 636, which serves St. Louis' outer suburbs to the west, south, and north. Across the Mississippi River to the east, 314 is adjacent to area code 618, which serves southern Illinois and most of Metro East. Area code 557 was added to the 314 numbering plan area on August 12, 2022, to form an overlay numbering plan.
Area codes 805 and 820 are telephone area codes in the North American Numbering Plan (NANP) for the U.S. state of California. The numbering plan area (NPA) includes most or all of the counties of San Luis Obispo, Santa Barbara, Ventura, and the southernmost portions of Monterey County. 805 was split from area code 213 in 1957, and area code 820 was added to the NPA in 2018, creating an area code overlay.
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Area code 414 is a telephone area code of the North American Numbering Plan for the area around and including the city of Milwaukee in the state of Wisconsin.
Area code 262 is a telephone area code in the North American Numbering Plan for the southeastern part of the U.S. state of Wisconsin. The numbering plan area comprises suburbs that are a part of the Milwaukee and Chicago metropolitan areas. The area code was created on September 25, 1999, in an area code split of area code 414.
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, while area code 363 was added to the numbering plan area in 2023.
Area codes 804 and 686 are telephone area codes in the North American Numbering Plan (NANP) for the east-central portion of Virginia. The numbering plan area is anchored by Virginia's capital, Richmond, and includes most of its metropolitan area. Other communities included are Chesterfield, Henrico, Hopewell, Mechanicsville, Powhatan, Midlothian, Petersburg, and Colonial Heights. This also includes the Northern Neck and the Middle Peninsula. The two southernmost counties on the Middle Peninsula, Gloucester and Mathews, are part of the Hampton Roads metropolitan area, but use 804 and 686 instead of the area codes 757 and 948 used by the rest of Hampton Roads.
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 codes 715 and 534 are telephone area codes in the North American Numbering Plan (NANP) for the U.S. state of Wisconsin. The numbering plan area (NPA) comprises most of the northern part of the state. 715 was one of the original North American area codes created in 1947, while 534 was added in 2010 as an additional code for the same numbering plan area to form an overlay plan.
Area codes 876 and 658 are telephone area codes in the North American Numbering Plan (NANP) for Jamaica.
Area code 951 is a telephone area code in the North American Numbering Plan for western Riverside County in the southern part of the U.S. state of California. It was assigned in 2004 to a new numbering plan area that was created by an area code split of area code 909.
Area code 709 is the telephone area code in the North American Numbering Plan (NANP) for the entire Canadian province of Newfoundland and Labrador.
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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 codes 573 and 235 are telephone area codes in the North American Numbering Plan (NANP) for most of the eastern half of the U.S. state of Missouri outside the immediate St. Louis area, including the state capital of Jefferson City, as well as Columbia, Cape Girardeau, Hannibal, Rolla, and Sikeston. The largest cities are Columbia, home to the University of Missouri, and Jefferson City, the state capital.The numbering plan area (NPA) extends across half of the width of the state, with the northeastern tip near the northeastern corner of the state, the Lake of the Ozarks at the western tip and Doniphan as the southwestern tip. They also serves all of southeastern Missouri and areas adjacent to the Mississippi River. 573 was created on January 7, 1996, in a split of area code 314, which was limited to the St. Louis metropolitan area in Missouri, and 235 was added on March 24, 2024 as part of an overlay complex.
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 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 816 and 975 are telephone area codes in the North American Numbering Plan (NANP) for most of the Missouri side of the Kansas City metropolitan area, the St. Joseph area, and all or part of 15 surrounding counties in northwestern Missouri. The numbering plan area originally comprised most of the northern and western two-thirds of the state, bordering with Arkansas, Illinois, Iowa, Kansas, Nebraska, and Oklahoma, but has been reduced to a ribbon bordering Kansas. 816 is one of the original 86 area codes created in 1947. The numbering plan area was converted to an overlay complex with area code 975 in 2023.
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North: 534/715, 906 | ||
West: 608/353 | 920/274 | East: Lake Michigan, 231 |
South: 262 | ||
Michigan area codes: 231, 248/947, 269, 313, 517, 586, 616, 734, 810, 906, 989 |