Kyburz is a small unincorporated community in El Dorado County, California. It is located along the South Fork of the American River and U.S. Route 50, and is surrounded by the Eldorado National Forest. Its elevation is 4058 feet above sea level. Settlement began a mile west at Webster’s Sugar Loaf House as a remount station for the pony express on April 3, 1860. The route ran through where US 50 locally is today. The Slippery Ford post office opened in 1861.