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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.
The ONS coding system was a hierarchical code used in the United Kingdom for tabulating census and other statistical data. ONS refers to the Office for National Statistics . It was replaced by the GSS coding system on 1 January 2011.
To find out the 25 poorest and richest area codes, GOBankingRates used the 2015 Census Community Survey, the most recent data available, to rank cities across the nation in order of mean household ...
GSS refers to the Government Statistical Service of which ONS is part. GSS codes replaced a previous system called ONS codes from January 2011. [1] [2] ONS codes were hierarchical whereas in GSS codes there is no relation between the code for a lower-tier area and the corresponding parent area.
The second area code, 202, was assigned to the District of Columbia. The allocation of area codes was readjusted as early as 1948 to account for inadequacies in some metropolitan areas. For example, the Indiana numbering plan area 317 was divided to provide a larger numbering pool in the Indiana suburbs of Chicago (area code 219). [citation needed]
Register of Geographic Codes (RGC) - the definitive list of UK statistical geographies. [ 5 ] ONS UPRN Directory (ONSUD) for Great Britain - relates the Unique Property Reference Number (UPRN) for each GB address from AddressBase® Epoch 65 to a range of current statutory administrative, electoral, health and other statistical geographies.
In 1947, the American Telephone and Telegraph Company (AT&T) devised the first nationwide telephone numbering plan and assigned the original North American area codes. The state of California was divided into three numbering plan areas (NPAs) with distinct area codes : 213 , 415 , and 916 , for the southern, central, and northern parts of the ...
The United States Office of Management and Budget (OMB) has defined 925 core-based statistical areas (CBSAs) for the United States and 10 for Puerto Rico. [1] The OMB defines a core-based statistical area as one or more adjacent counties or county equivalents that have at least one urban core area of at least 10,000 population, plus adjacent territory that has a high degree of social and ...
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related to: ons demographic by area code