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English: Labelled Belfast inset map of Royal Mail postcode districts of the BT postcode area. Indicative postcode districts shown in red, post towns shown in grey. Equirectangular projection with latitude stretching 170%, WGS84 datum. Geographic limits: Main 1:153,000 map: West: 6.078W; East: 5.7669W; North: 54.689N; South: 54.506N
English: Labelled map of Royal Mail postcode districts of the BT postcode area. Indicative postcode district labels shown in red, post town labels shown in grey. Equirectangular projection with latitude stretching 170%, WGS84 datum. Geographic limits: Main 1:709,000 map: West: 8.253W; East: 5.363W; North: 55.349N; South: 53.989N
A group of postcode districts with the same alphabetical prefix is called a postcode area. All, or part, of one or more postcode districts are grouped into post towns. [1] Until 1996, Royal Mail required counties to be included in addresses, except for 110 of the larger post towns.
In 2012, the government of Trinidad and Tobago approved the introduction of postal codes starting later that same year. In addition to the postal code implementation the country has embarked on a nationwide address improvement initiative adopting the Universal Postal Union (UPU) S-42 international standard of addressing. The UPU is an arm of ...
This map is clickable; click on any region shown to visit the page for those area codes.Area codes 657 and 714 are shown in red. Area codes 714 and 657 are telephone area codes in the North American Numbering Plan for the southern part of the U.S. state of California .
Initially, area codes with the middle digit 0 were assigned to numbering plan areas that comprised an entire state or province, while jurisdictions with multiple numbering plan areas received area codes having 1 as the second digit. As network growth could not be predicted accurately over more than a few years, this pattern was abandoned by ...
The U.S. state of Washington has six telephone area codes. The state initially used a single area code until it was divided in 1957 with the creation of area code 509 to serve Eastern Washington. In 1995, 206 was split again to serve just the Puget Sound region after area code 360 was created for the remainder of Western Washington.
Interactive map of the numbering plan areas of the Commonwealth of Pennsylvania (blue). This is a list of telephone area codes of Pennsylvania. In 1947, the American Telephone and Telegraph Company divided Pennsylvania into four numbering plan areas (NPAs) and assigned distinct area codes for each.