Cucamonga Valley is a region of southwestern San Bernardino County
The Cucamonga Valley is a region of southwestern San Bernardino County in the Inland Empire region below the San Gabriel Mountains. Geography is a region of the eastern Pomona Valley between San Bernardino and Los Angeles. The Cucamonga Valley AVA designated American Viticultural Area was a major site of wine production. The demographics of the Cucamonga Valley have been shifting in recent years. The city of Rancho Cucamonga has the highest population of Asian Americans at 9.0 % of the population in the Cucamonga Valley.
Two Metrolink commuter rail lines serve the Cucamonga Valley area.