US Cities with Open Data Websites

Many cities have started to create open data websites to post their collected geospacial data.  These sites usually allow bulk download of their datasets in standard machine-processable file formats, which is key.  Some have visualizations of the data too, though this is a secondary feature to open data. These sites are either created by the city, or they use certain vendors to provide easy, out-of-the-box solutions for formatting, opening, and mapping their raw data.

The Federal Government’s List of Open Data Cities (though this is usually way out of date)

Using CKAN

• Lexington
• Colorado: Denver, Arvada, Boulder, Castle Rock

Using Socrata

• Austin
• Baltimore
• New York City
• San Francisco
• Seattle
• Chicago
• Austin
• New Orleans
• Sommerville, MD
• Honolulu

Using Junar

• Palo Alto

Using GovMapper

• Louisville

Using Open Data Catalog

• San Diego
• Philadelphia

Using Custom Code

• Atlanta
• Portland
• Boston
• Washington D.C.
• Ann Arbor

Any that we missed? Let us know in the comments and we will keep this post updated.

Updated: Nov 20, 2012 – Colorado, Lexington, Honolulu.