The USPOD issued its Publication 59: Abbreviations for Use with ZIP Code on October 1, 1963, with the list of two-letter state abbreviations which are generally written with both letters capitalized. īy the early 1960s, a more organized system was needed, and non-mandatory five-digit ZIP Codes were introduced nationwide on July 1, 1963. But maybe you can get by with just the CBSAs.The "16" is the number of the postal zone in the specific city. On Wikipedia, there's a page of "primary statistical areas" that articulates which CBSAs aren't in any CSA, but I haven't seen a GIS shapefile that matches that list. To the Census, CSAs are "Combined Statistical Areas" and they are composed of some groups of CBSAs that are economically related.
The bureau doesn't use the term "MSA" but rather combine "metropolitan statistical areas" and "micropolitan statistical areas" into a set called "core based statistical areas" or CBSAs.
#US ZIP CODE LIST SOFTWARE#
GIS software makes this fairly straightforward, with shapefiles provided by the Census's TIGER program.īut your question is further complicated by this: to the Census Bureau, CSA and MSA are different (and overlapping) things. Once you have a ZCTA centroid, you can locate it in a CSA or MSA.
(You want the INTPTLAT and INTPTLONG columns.) You can find this in the Census Bureau's ZIP code tabulation area (ZCTA) gazetteer file, which can be downloaded here. ZCTAs are areas, not points, but when you ask for the latitude and longitude, you're probably interested in the centroid. If you want to assign them names based on the nearest town, etc, you have some work to do. The Census Bureau just uses the 5-digit reference ZIP Code as a label. So anyway, this means that naming is not straightforward. (Some commercial data vendors promise to keep up with those changes as another value-add.) And, the USPS may have changed ZIP codes since the last time the Census Bureau produced ZCTA definitions. Also, if you're starting from mailing addresses, you will probably have some ZIP codes which aren't in the ZCTA dataset. If the distinction matters, much more information can be found on this page The key things to know: ZCTAs overlap city boundaries and certainly at least a few exist outside of any city boundary. USPS ZIP Codes are not areal features but a collection of mail delivery routes. The USPS ZIP Codes identify the individual post office or metropolitan area delivery station associated with mailing addresses.
If you'd rather create this dataset than buy it, here are things to know: There's a cottage industry of data services that have been providing this to small businesses for years, the costs are pretty low, and the length of the rest of this answer verifies that it's involved, although certainly something you can do if you have some coding and data skills. It would be a separate exercise to roll it up to MSA or CSA.įor many people, the best way to get this data is to buy it. The file includes city, county, state, latitude and longitude. Update: I recently found this data at, among many related data sets.
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