Does anyone know of local area data similar to how craigslist is laid out?

I've been scouring the net looking for this data.

For instance it is easy to find a list of cities, zip codes, counties etc. But I am looking for something more local. Any help locating a similar data set would be very much appreciated.

For instance:

In SF Bay Area You can find:

San Francisco South Bay East Bay Peninsula North Bay Santa Cruz