Foothill Farms is a census-designated place (CDP) and unincorporated community in Sacramento County, California, USA. It is part of the Sacramento–Arden-Arcade–Roseville Metropolitan Statistical Area. The population was 35,834 at the 2020 census, up from 33,121 at the 2010 census. Foothill Farms is part of the greater North Highlands-Foothill Farms community, and comprises the zip codes 95841 and 95842. www.foothillfarms.org