Every US housing market, monthly, as one queryable API

of US housing-market data — every metro, county, city and ZIP Redfin publishes — each with 173 months of history back to 2012, for 17,927,456 region-month records in one queryable index.

the median US home ($449,846) costs relative to the median household income ($80,734) — against the classic 3× affordable line. Buying it needs a $121,483 salary.

of the 952 US counties with real transaction volume price the typical home above 5× income; only 3.7% still sit under the 3× line. Affordability is now the exception.

of region-months carry a Census income join, so price-to-income, salary_to_buy and the affordability gap are computed and filterable — not just raw prices.