Cash on Cash ratio with some standard assumptionsBased on collected data, my rankings are:OH (Cleveland, Columbus, maybe Cincinnati): affordable, good population and economic growth, 16-20% rent to value ratioNC (Durham, Raleigh and Charlotte): less affordable but high population and economic growth, stable median home values and decent rent to value ratioGA (Atlanta): this is right in between OH and NC.

Another great tool for this type of data, is call your insurance company, they have very advanced stats on every zip code and down to the street, they will tell you exactly what you need to know. 

The resources are endless on educating yourself and digesting data on what makes a certain market at A or an A+ in the STR market.

House values are driven by owner occupants.

And it seems rather inefficient to start sending out marketing and mail campaigns without some knowledge of who is doing those types of transactionsAdvanced Seller Data Services - Scott ArpanHis site has good info also. 

Hiya folks,Anyone out there know of data sources to use when performing market research on a new potential real estate market to invest in?

The other really important piece of data that I can offer is that in 15 years of doing business, we have never had a chargeback from a tenant against a landlord. 

No one is going to bother to enter demographics data twice.

You can also "join" your data table and the data table from the government and get the info you need.

I am currently in need for some data from investors in the Philly and Delaware County Marketplace for rentals.