About This Place
Penn Valley is a census-designated place (CDP) in Nevada County, California, United States. The population was 1,621 at the 2010 census, up from 1,387 at the 2000 census.
Penn Valley is located at 39°11′54″N 121°11′20″W / 39.19833°N 121.18889°W / 39.19833; -121.18889 (39.198214, -121.188965).
According to the United States Census Bureau, the CDP has a total area of 2.1 square miles (5.5 km²), all of it land.