@Austin Wolff,
We've been doing a lot of deals in these areas and are observing similar trajectories as the census data. The price points in these three areas are attracting many investors and consumers are flocking as well because of the relative affordability. There are many new developments going in Fairburn and this has proven to be a great rental and fix & flip market. Outside of being convenient to the city of Atlanta, this area has a lot of job opportunities as there 12 companies that provide 100+ local positions the directly impact this sub-market. As for McDonough, the state of GA recognizes the population distribution and they are planning to expand I75 into an expressway to open up flow of traffic to and from the city during high traffic times. Villa Rica has an extensive development plan with Fuqua, the company the worked on the Battery Park project in Atlanta. As you know, these large developments bring much economic upturn in most markets and investors are capitalizing where they can.
Let me know if you want to connect more on this topic. I don't know everything, but I have the resources to get any information you need.