The data will show projected metrics vice true metrics.

Hi Tim, I personally use reicitydata.com, there's a lot of good economic and demographic data, along with trends over time.

According to this data it looks like Bellingham has seen almost 41.5% growth in population since 2000..

Personally I use SpyReal.com I've been able to close a few deals using their data to contact vacant property owners.I was told that TLO has to come out and inspect your place of business or you need a PI license, credit company, or attorney.

I've ran the amortization data comparing the cost differential of buying now at a low interest rate versus paying a higher rate in the future with a lower home price.

Anthony G that site has killer data.

I did a lot of direct marketing using the data from Default Research and they stopped their service.  

When looking for a good buyers agent make sure they can work at the speed your clients will need them to work at ... that is why I got my license because I was tired of losing deals because I was waiting to either get in a property or to get the data I needed to run my numbers.

Kind of a data driven validation that BP members most active there.

Some great data sources I used were redfin's data center blog, google's public population estimates for cities, and talking with other investors.