Simple Geographic Data Sources for a Web App

StackOverflow https://stackoverflow.com/questions/225824

  •  03-07-2019
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Question

For a web app I'm working on, I need to know the lat/lon of about 300 US cities. I also need to know the lat/lon for every US zip code.

Does anyone know of a free source to get this information?

Was it helpful?

Solution

Freebase will likely be able to help you. Here is New York and it has Lat/Long.

The Wal-Mart Expansion video used Freebase to get it's data, and it sounds like you're doing something similar.

OTHER TIPS

Take a look at Ben Fry's Zip Code Visualizer. This is part of his book Visualizing Data.

There is an online database at Geocoder.us. And a simple perl module (we added a soap service to this so we could simply access it from any language, and the longest part of the development process was downloading database (it's about 4 GB).) The geocoing database is available from the US census bureau, a good article on getting this setup can be found here.

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