Hey Guys
Have you tried www.bestplaces.net. I use that and other websites. I start my research in that order (below):
1. www.trulia.org - Shows the Heat Map and the average price in the city you are looking for properties and neighboring Zip Codes
2. www.bestplaces.net - shows the population, expected population growth, pollution, schooling, spending on schools, job growth, rental vacancy rate, etc. compares with National Average
3. www.ofheo.gov - gives you the complete of list of appreciating and depreciating cities nationwide - Downloadable PDF
4. www.huduser.org - fair market rents - downloadable Excel. Consists of almost all counties across the nation
Hope that helps.