Welcome to Rancho Cucamonga, CA! Rancho Cucamonga is a suburban city situated at the foothills of the San Gabriel Mountains. The city's favorable location and host of public amenities have earned it numerous distinctions. Fun facts; Did you know that in 1920, the Cucamonga Valley produced more wine grapes than Napa County and Sonoma County combined. The former Mission Vineyard winery, later known as the Virginia Dare Winery, was established in 1910 in Rancho Cucamonga (town).please click belowto find and buy your home in Rancho Cucamonga today.