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Find the user's zip code

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  1. wige

    wige Well-Known Member This Topic's Starter

    Oct 28, 2009
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    I am creating a new app that will allow users to search for local concerts. This app will pull data from a web database that uses a supplied zip code or state to determine the market area that should be searched.

    What is the best way to determine a user's current zip code? I can't seem to find much documentation on getting information from the user's network location - how to do it, what format it is in, ways to convert that to a zip code - all the samples seem to use the GPS, which is overkill for this app. Any suggestions?

  2. mkhopper

    mkhopper Well-Known Member

    Oct 15, 2009
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    Sounds like a good idea for an app.

    Even the user's network location is stored as lat/long in the phone. It just isn't as precise.
    For a zipcode lookup though, it ought to be more than close enough.

    I couldn't find any easy way to do a web lookup that returns a zipcode based on lat/long, but I did find a free database in .csv format that gives this information.

    It's a few years old, but may serve as a start.

    Free Zip Code Latitude and Longitude Database

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