Yes they can be. Zip codes are used to identify market areas so they can market more, such as sending mail, fliers, or coupons to the zip codes or areas that shop more at their stores.
City Data and Dreamtown both have a map of Chicago with zip codes. Zip Codes itself also has a website that shows all the zip codes on a map of Chicago.
A data type of "string" should be assigned to a field that will contain zip codes, as zip codes may start with zeros, and using a numeric data type can lead to losing leading zeros.
attribute data
There are several websites for finding all of Florida's addresses and corresponding zip codes. These include zipcodestogo, unitedstateszipcodes, 555us, zip-codes and brainyzip. While these sites' delivery of the data varies, it would be an easy but lengthy task to manually migrate and organize that data into a spreadsheet or database.
Zip codes are primarily used for the sorting and distribution of mail throughout the United States. In addition, zip codes are used by researchers for data collection and comparison between and among areas.
This website has everything you need to know about zip codes in the USA, including census data and a huge database of every zip code: www.zip-codes.com/.
Zip Codes are only used in the United States. There are no international zip codes.
Numbers are used in zip codes.
You should choose a data type that can accommodate a zip code, such as a string/text data type with a set length to match the format of zip codes in your region. This allows for both numerical and special character values to be stored.
27 zip codes
OK. States don't have Zip Codes. Cities have Zip Codes. You can get the complete list of ZIP codes in California under different Cities from here: http://www.zip4all.com/california/ca/ .