Porterville is a city at the base of Southern Sierra Nevada mountains on the eastern side of San Joaquin Valley, in Tulare County, California, United States. It is part of the Visalia-Porterville metropolitan statistical area. Serving as the economic hub of the Southern Sierra, the Sequoia National Forest is nearby, offering outdoor recreational opportunities such as hiking, camping, and fishing. Since its incorporation in 1902, the city's population has grown as it annexed nearby unincorporated areas. The city population was 62,623 at the 2020 census.