4. Los Gatos, California

We stay in California for the next contender on our list, Los Gatos, where the average house was listed at just more than $1.36 million. With a name once referencing the abundance of mountain lions and other big cats in the region, Los Gatos has come a long way from its primeval days, now standing as one of the wealthiest neighborhoods in the Bay Area and in the entire United States, as well.