How do I figure out what towns have multifamilies (besides driving for dollars)?

[Brooke B.]

Hello,

So I am buying my first property this year- a duplex, triplex or fourplex and renting out the other unit(s). I have already spoke to a lender about what I can afford but now I need an agent. Every time I try to find an agent, it forces me to put a ZIP code first. How on earth am I supposed to know which ZIP codes have multifamily homes without driving and looking everywhere? How am I supposed to choose an agent per ZIP code when I have multiple towns I am considering? I'm aiming for central New Jersey but am an hour out in PA. I have about 10 towns I am considering so I need to narrow it down and am not sure how to. How am I supposed to find an agent by ZIP code when I don't know which ones even have options?