advertising...target market

[Iris Burrows]

Hey everyone,

I recently recovered from analysis paralysis and I'm putting myself out there as a wholesaler in my area. I recognize that marketing is the best way to find and make deals. One route I'm interested in is direct mail. In your opinions, are there particular modifiers to create your target market, when creating mailing lists? Ie zip codes, household income, age. 

Also, if you can suggest or share the list services you all use so I can research and compare, that'd be helpful as well.