Where: Along Big Wood River
Median home value: $836,336
Median household income: $62,611

Private luxury properties on large plots can be found in Sun Valley, a ski resort area in Idaho. The median household income in the area is not high, but Sun Valley is a popular second-home market. Julie Hurst, a salesperson for Sotheby’s International Realty, says expensive homes can be found along the Big Wood River, Fairway Road, the Lake Creek area, and Beaversprings. Homes for sale include the $9.9 million Juniper Spring Ranch, on 1,100 acres, and a $5.85 million home once owned by Brooke Shields, according to SIR.

*Median home value source: NeighborhoodScout