The easy way to calculate distances, radius, and locations for zip codes.
Make your forms faster by auto-filling information when users enter a zipcode.
Click here for example code.
The API allows you to quickly and easily figure out the distance between zip codes.
You can use the API to find all zip codes within a given radius from another zip code.
The API can convert a zip code to the primary location for the zip code. This includes the city, state, latitude, longitude, and time zone information for the primary location. Click here for an example of auto-filling city and state in a form when a zip code is entered.
You can use the API to determine possible zip codes for a city.
You can use the API build the WHERE clause for use in SQL statements to your own database. This allows you to create custom searches based on latitude and longitude.
The API can take a list of zip codes and match together those that are within a specified distance of each other.
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We moved from zipcodedistanceapi.redline13.com to our new domain name www.zipcodeapi.com. The site is still run by Redline13 and all existing applications using our previous URL will continue working.