Placerville is a city in and the county seat of El Dorado County, California. Take a look below for 15 obscure and fun facts about Placerville, California, United States. 1. The population was 10,747 as of the 2020 census, up from 10,389 as of the 2010 census. 2. It is part of the Sacramento–Arden-Arcade–Roseville Metropolitan…