Remember those expensive demographic surveys -- Precept, Proscript, something -- that the districts provided for church planting, say, 15 years ago.
OK: perhaps not. After all, they were expensive.
Well, I learned today that ESRI -- and no particular endorsement for ESRI, by the way -- has a map-based zip code look-up tool. Not the same thing, but it does suggest where you might want to target in-person (or postal ?) outreach activity, and what the people who live in that zip code likely value.
Oh, I'm sure it's a gateway to more refined data, at a cost, I'm sure. But we're hardly ready for that kind of granular data (for new churches, anyway) yet --
In the meantime, here is a link to the demographic profiles and segmentation overview.