La Plata County, Colorado

La Plata County is one of the 64 counties in the U.S. state of Colorado. As of the 2010 census, the population was 51,334. The county seat is Durango. The county was named for the La Plata River and the La Plata Mountains. "La plata" means "the silver" in Spanish.
La Plata County was founded in 1874.