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2025 – 4th Qtr [3] April 26, 2025 [4] [25] NPA boundary changes, overlay expansions, etc. 564. 206. Washington. 2026 – 1st Qtr. April 5, 2025 [26] Other area codes that are expected to exhaust by the end of 2027 that do not have an approved relief plan: 352, 502, 520, 603, 714/657, 718/347/929, 765 and 949.
This is a list of the area codes in the state of Illinois and its numbering plan areas in the North American Numbering Plan.. All NPAs within Illinois. 217/447: Central Illinois, including the region running west from the Illinois-Indiana border through Danville, Effingham, Champaign–Urbana, Decatur, Springfield, Quincy until Illinois' western border with Missouri and Iowa.
this was the first part of North America to have its code changed three times: from 213 to 714 1951: to 619 in 1982, and to 760 in 1997. was to have originally split off the portion of 760 serving San Diego County to a new 442 area code in late 2008/early 2009; that plan was cancelled. 2009: overlaid by 442. 761.
The original North American area codes were established by the American Telephone and Telegraph Company (AT&T) in 1947, after the demonstration of regional Operator Toll Dialing during the World War II period. The program had the goal of speeding the connecting times for long-distance calling by eliminating intermediary telephone operators.
Lists of North American area codes. The largest telephone numbering plan in North American is the North American Numbering Plan (NANP), serving 25 regions or countries. Other countries maintain an autonomous numbering plan with distinct country codes within the international E.164 specifications by the International Telecommunication Union .
area Country Population (2022) Year Notes Mexico City Mexico: 21,804,515 2020 New York City United States: 19,557,311 2022 Los Angeles United States: 12,872,322 2022 Greater Toronto Canada: 9,765,188 2021 Greater Golden Horseshoe population 2024 : Chicago United States: 8,984,000 2024 Chicago Metro Area Population 2024: Dallas–Fort Worth
Mexico City is the most populous city of Mexico and North America. New York City is the most populous city in the United States, and the second-most in North America. Toronto is the most populous city in Canada, and the fourth-most in North America. Los Angeles, the most populous city on the Pacific coast of North America.
For the majority of cities in North America (including the Caribbean ), the most recent official population census results, estimates or short-term projections date to 2020, with some dating 2022 at the latest. This list compiles figures for all North American cities with a population within city limits exceeding 500,000 that year.