Every publicly reachable dataset that can tell us how many single men vs women are in a place — and what their traits and looks might be. A field guide for building something better than singlesatlas.com.
One real spatial signal: the Census ACS sex-ratio × marital-status cross-tab, frozen at 2018. Everything else is bolted on — a 2011 county obesity surface stretched by national multipliers, and a height slider that is one national bell curve applied identically to every county.
The height slider carries zero within-US geography. The BMI layer is 15 years stale. Nothing measures who is actually in the market.
This page is step 1: inventory the raw material. Sources below are tagged by what they reveal, how current they are, what they cost, and where they lie to you.