La Porte is a census-designated place (CDP) in Plumas County, California, United States. The population was 26 at the 2010 census, down from 43 at the 2000 census.
According to the United States Census Bureau, the CDP has a total area of 4.5 square miles (12 km sq), all of it land.
During the late California Gold Rush in the 1870's and 1880's the town of La Porte had a population of aproximately 10,000 people. Potable water was provided free through redwood mains (some of which are still in service) by wealthy local citizens. Civic leaders strongly opposed hydraulic mining in the area, citing potential damage to watershed land as legal means to stop most hydraulic mining. Also of note is that La Porte is well known as the birthplace of downhill ski-racing.