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U.S. ZIP codes. ZIP codes 006XX for NW PR, 007XX for SE PR, in which XX designates the town or post office and 009XX for the San Juan Metropolitan Area, in which XX designates the area or borough of San Juan. The last four digits identify an area within the post office.
For individual ZIP codes, see Category:Individual ZIP codes. Note: This category page should be empty. All entries should be recategorized under one of the above categories or an appropriate subcategory.
The main town in a region (if applicable) often gets the first ZIP Codes for that region; afterward, the numerical order often follows the alphabetical order. [24] Because ZIP Codes are intended for efficient postal delivery, there are unusual cases where a ZIP Code crosses state boundaries, such as a military facility spanning multiple states ...
Each NPA is identified by one or more numbering plan area codes (NPA codes, or area codes), consisting of three digits that are prefixed to each local telephone number having seven digits. A numbering plan area with multiple area codes is called an overlay. Area codes are also assigned for non-geographic purposes.
In order to receive the appropriate barcode discount, the delivery point digits and the +4 extension must be verified using an up-to-date, CASS or Delivery Point Validation (DPV) certified program. Since each city block or section of a rural route has a different +4 extension, and address numbers generally increase by 100 per block, the ...
There are also mixed systems, using a syntactical partition, where for example the first part (code prefix) is a name-code and the other part (code suffix) is a grid-code. Example: Mapcode entrance to the elevator of the Eiffel Tower in Paris is FR-4J.Q2 , where FR is the name-code [ 9 ] and 4J.Q2 is the grid-code.
ZCTAs are generalized area representations of the United States Postal Service (USPS) ZIP code service areas, but are not the same as ZIP codes. Individual USPS ZIP codes can cross state, place, county, census tract, census block group and census block boundaries, so the Census Bureau asserts that "there is no correlation between ZIP codes and ...
In computing, natural sort order (or natural sorting) is the ordering of strings in alphabetical order, except that multi-digit numbers are treated atomically, i.e., as if they were a single character. Natural sort order has been promoted as being more human-friendly ("natural") than machine-oriented, pure alphabetical sort order.