Find them at local real estate meetups, but be careful, it's a sketchy business overall.

I once owned a 20-acre mixed-use property in Illinois.

The key to investing out of state is finding a good property manager.  

Have you done any value-added work to your current properties?

That makes the investing and property management a LOT easier.  

@Michael Houston  In Duluth, most rental properties that get listed on the MLS make note of an active rental license for the property.

Better tenants expect better and treat the property so.

@Anthony Saheed I would advise you to be very careful to recommend people to speculate in volatile real estate markets.

Daniel,If its something you really like from all accounts, get with an inspector and property manager to give their thoughts on the area, condition of the property etc...

Most traditional property managers don’t handle this setup due to challenges like managing tenant disputes, coordinating overlapping move-ins/outs, and the risk of Fair Housing violations when selecting tenants.