He gets $75,000 a year with Medical.

I suspect a lot of the population shift is people moving from the old/functionally obsolete housing stock  in Cleveland proper (the older neighborhoods that popped up during the industrial age) into newer built homes 10 minutes down the road in the suburbs because the land simply isn't available within the city limits.We have some major economic drivers in the academic and medical fields.  

The neighborhood has appreciated (thank you free-market medical weed?)

Last weekend, there were police and emergency medics on the property 2:30am.

Are there medical bills unpaid?...

They have done a lot of medical, assisted living and memory care projects.

Sometimes they will approve housing that will require a tenant to pay up to 40% of income to housing and utilities, but that does not leave very much for food, medical, transportation, savings for emergencies, etc. 

Greenville's largest employers in manufacturing are  Thermo Fisher Scientific (1,954) and Hyster-Yale (1,226), the largest non-manufacturing employers are Vidant Medical Center (6,760), East Carolina University (5,672), and Pitt County Public Schools (3,699). 

If you're planning to target traveling medical professionals check on this stats page for Louisville on Furnished Finder https://www.furnishedfinder.com/stats?

I tend to rent to medical people, usually nursing staff, well-vetted by our medical system before they get to me.