(Zillow.com via arcdigita.com) The Zillow data team has created a database of nearly 7,000 neighborhood boundaries in the largest cities in the U.S. And they’d like to share them with you! They’re sharing these neighborhoods under a Creative Commons license to allow people to use and contribute to their growing database.
Now comes the fine print: You are free to use the files in this database in applications as long as you attribute Zillow when you use it. You may also make your own changes to the database files and distribute them, as long as you provide them under the same kind of license and give Zillow attribution. The neighborhood shapes are available below, zipped up in the Arc Shapefile format.
The downloads are by state and available here: