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To accommodate the intense demand for data aggregated by ZIP code, the Census Bureau created ZIP Code Tabulation Areas (or ZCTAs) which are roughly what most people think of as the geography that matches a given ZIP code. But not all ZIP codes exist as ZCTAs. For example, my office address is in the ZIP code 60208, but it is in the ZCTA 60201 ...
And, the USPS may have changed ZIP codes since the last time the Census Bureau produced ZCTA definitions. (Some commercial data vendors promise to keep up with those changes as another value-add.) So anyway, this means that naming is not straightforward. The Census Bureau just uses the 5-digit reference ZIP Code as a label.
The R package noncensus contains a data set called zip_codes that lists the following features for each zip code: zip. U.S. ZIP (postal) code ; city. ZIP code’s city ; state. ZIP code’s state ; latitude. ZIP code’s latitude ; longitude. ZIP code’s longitude ; fips. County FIPS Code; So you can get zip code to FIPS.
I'm searching for some kind of database which would allow me to determine the county from an existing US address (consisting of number, street, city, zip and state). Obviously that would require some sort of database including street names and ranges, city, county and state; however I have not been able to find anything of the sort.
The first link you gave describes a "Zip by DMA" product: "The ZIP by DMA database provides ZIP Code listings within U.S. counties by DMA region." Isn't that what you want? Is it non-free? It says it's an Excel file delivered by email; presumably you have to fill out a form to request it. –
Using the current preferred place name for a ZIP code will be right in many (most) cases (or, better, a list of the preferred and acceptable names). But there will be a percentage that have changed (split, merged, swapped), and where using a modern lookup for 1970's data will give incorrect (and misleading) results.
Also keep in mind that the city names you see in the postal data do not correspond with municipal borders. Some municipalities within the zip code do not show up at all in the post office city names, and some of the city names in the postal records don't correspond at all with a municipality.Here's a lookup tool provided by the USPS.
Probably the most relevant data resource for the basic details of city and county government is the Census of Governments: Government Integrated Directory which provides city/county name, address of gov office, phone number, etc. This in combination with Census Tiger boundary data will get you pretty far and served as the basis for the ...
I am looking for a tabular (preferably) dataset or a website's API that contains the economic data of zip codes, counties or cities in the US. This dataset has to go back at least to 2003 (it's not
Most Up-To-Date Source for US Zip Code Boundaries; One thing to keep in mind is the fact that Zip Codes are not polygons, and therefore do not have boundaries. That answer and the others has resources for various GIS softwares: for example, ArcGIS