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Area codes are also assigned for non-geographic purposes. The rules for numbering NPAs do not permit the digits 0 and 1 in the leading position. [1] Area codes with two identical trailing digits are easily recognizable codes (ERC). NPAs with 9 in the second position are reserved for future format expansion.
There are 4 active area codes in the state of Colorado. Each of these area codes are listed below. There are two lists that Wirefly provides for the area codes in Colorado. The first table below shows the most populated cities in Colorado with the area codes listed next to them. The next table shows the all the Colorado state area codes by ...
Colorado has 62 cities and 38 towns that are home rule municipalities, which are self-governing under Article 20 of the Constitution of the State of Colorado; Title 31, Article 1, Section 202 of the Colorado Revised Statutes; and the home rule charter of each municipality. The state-authorized home rule charter determines the form of government.
Original statewide area code until 1957, when area code 509 was created for Eastern Washington. Further splits in 1995 to create area code 360 for most of Western Washington, and 1997 to form area codes 253 and 425. 564 will be added to the 206 area in 2025. 509: January 1, 1957 [1]
Boulder County Colorado ZIP Codes - Map and Full List Boulder County Colorado is covered by a total of 29 ZIP Codes . There are 9 ZIP Codes in Boulder County that extend into adjacent counties ( Broomfield County , Gilpin County , Jefferson County , Larimer County , and Weld County ).
Aleutians West Census Area [b] 02020 Anchorage, Municipality of [a] [c] 02050 Bethel Census Area [b] 02060 Bristol Bay Borough [a] 02063 Chugach Census Area [b] 02066 Copper River Census Area [b] 02068 Denali Borough [a] 02070 Dillingham Census Area [b] 02090 Fairbanks North Star Borough [a] 02100 Haines Borough [a] 02105 Hoonah–Angoon Census ...
On Aug. 1, 2023 the 2023 edition of the NFPA 70 National Electrical Code (NEC) was adopted by the State of Colorado and enforced by the City of Boulder with local amendments in the Boulder Revised Code. As a result, the 2023 NEC became the minimum standard for electrical permits issued on or after Aug. 1, 2023.
