TRULIA API provides great statistical info like visitor traffic showing which home market is hot.
It also shows average and median home prices over a period of time and even breaks up the prices for 2 BR, 3BR Homes etc.
Visit Neighborhood schools area built using Education.com API.
Check out our Zillow API action center and get home valuation, comparable sales, Mortgage rates etc.

US Mortgage Rates (30 year) - Heat Map created using Google Fusion Tables API