Short for Rancho Cucamonga, CA. In the Inland Empire this is what people call the city of Rancho Cucamonga. Ironically Rancho Cucamonga used to be named only "Cucamonga" with the "Rancho" added in the very late 70's. This decision was made when Cucamonga, Alta Loma and Etiwanda became all one city. But most old timers still insist on calling thier parts of the city by it's former name. With Alta Loma being more prestigous in the 70' and 80's and Etiwanda becoming more prestigous in the 90' and 00's. Cucamonga is considered the least prestigious of the three.