Forget affordability—the American dream is now a fairy tale for many would-be home buyers.

A median-priced home was out of reach for Americans in 84% of counties in the third quarter of the year, according to ATTOM Data Solutions’ third-quarter Home Affordability Report. To come up with its figures, the real estate information company looked at U.S. Bureau of Labor Statistics wage data in each of the 440 counties it analyzed as well as sales deed data.

The report also found 30% of folks lived in places where they needed a household income of at least $100,000—if not more—to buy a median-priced home. Ouch.

(ATTOM assumed that buyers had at least a 3% down payment and were taking out a 30-year fixed-rate mortgage. Property taxes and home and mortgage insurance payments were also factored in.)

“We’ve reached a tipping point for affordability,” says Daren Blomquist, senior vice president of ATTOM. While prices aren’t coming down, he’s starting to see the rate of increases slow just a bit.

“Something has to give,” he says. “Prices cannot climb as quickly as they have been over the last few years.”

Nationally, home affordability fell to its…