Would definitely check local zoning / code enforcement laws as well.  

Some credit unions or local banks offer portfolio loans that don’t stick to the 4-unit limit, which could work well here.

can check out local apps like eventbrite or meetups

Local real estate agent.

The state laws (do not quote me) appear to not let these companies increase rates (or its not easy) to pick up the losses.

Here in Texas, thousands of people have been deported in the last 2 weeks and many who have not committed any crimes per our local news agencies.

HUDuser.org is great for vacancy rates, but cross-referencing with local market reports is important for more context.For job diversity and employers, LinkedIn or regional economic development websites often provide insights.

I like markets with diverse job drivers, and it is always helpful to have major corporations locally. 

If you don't fall within that category a knowledgeable local real estate agent can be an excellent resource.

@Tim Bergstrom I am a lender with a local bank here in Louisville and an investor personally as well.