Source: U.S. Census Bureau 2017
Tools: Excel, ArcMap
This map is based on median house price and median income per county. Workers in a county with a median income per capita of $50,000 would have to pay 2 years worth of salary to pay off a median house cost of $100,000.
The least number of years was King County, Texas at 1.3 years (median income: $29,918, median housing price: $38,800). The most number of years, oddly, was Kings County (Brooklyn), New York at 20.8 years (median income: $29,928, median housing price: $623,900).