Neighborhood by Zip Codes for New York and Los Angeles

Question

I haven't been able to find an online open source of US neighborhoods with their corresponding zip codes. I am particularly looking for New York and Los Angeles.

Answer 1

You can use/combine Code for America's Click That 'hood with Zillow Neighborhood Boundary Shapefiles to get some, if not all of that data. Data is here:

Click That 'hood Data Directory
California Neighborhood Boundaries
New York Neighborhood Boundaries