ZipCode Radius of Given ZipCode?
I downloaded a DB of Zipcodes with Latitude and Longitude.
I want to know if its possible to get a list of zipcodes within a radius of a given zipcode.
For example i type
33433 and i should get 10miles of zipcodes
would i need to use API for this or can i do it specifically in my database?
zip code radius source codes
Here you can find the sources codes for the zip code radius calculation not only in PHP but also in ASP.NET (C#) and Coldfusion: http://www.zipcodesoft.com/zip-codes-in-a-radius
An interesting add-on could be to calculate the distance as the road distance instead of as the crow flies.
This page shows how to to that: http://www.zipcodesoft.com/distance-between-zip-codes
The necessary zip code database you can download here: http://www.zipcodesoft.com