El Dorado County, California along with the population since the 1960 Winter Olympics, hosted at Squaw Valley Ski Resort in neighboring Placer County. The present-day site of El Dorado County was once home to the Maidu, Washoe, and Miwok Native American tribes, and is notable for being the site of the 1848 gold discovery that sparked the California Gold Rush. The County of El Dorado was one of California's original 27 counties created effective February 18, 1850 (the number has risen to 58 today). Its name is derived from the Spanish meaning "the gilded/golden". The final segments of the Pony Express mail route ran
El Dorado, California Dorado is in . El Dorado, California El Dorado (Spanish for "The golden"; formerly Eldorado, Mud Spring, and Mud Springs), not to be confused with the nearby El Dorado Hills, is an unincorporated community in El Dorado County, California. It is located southwest of Placerville, at an elevation of 1608 feet (490 m). The population was 4,096 at the 2000 census. The town is registered as California Historical Landmark #486. The ZIP code is 95623. The community is inside area code 530. El Dorado, "The Gilded One", was first known as Mud Springs from the boggy quagmire the cattle and