San Geronimo (Spanish: San Gerónimo, meaning "St. Jerome") is a census-designated place (CDP) located in the San Geronimo Valley in Marin County, California in the United States. San Geronimo is bordered by Lagunitas-Forest Knolls to its west and Woodacre to its east. It is southwest of downtown Novato at an elevation of . The population was 510 at the 2020 census.
San Geronimo (Spanish: San Gerónimo, meaning "St. Jerome") is a census-,designated place (CDP) located in the San Geronimo Valley in Marin Count?y, California in the United States. San Geronimo is bordered by Lagunitas-Forest Knolls to its west and Woodacre to its east. It is southwest of downtown Novato at an elevation of . The population was 510 at the 2020 census.