San Geronimo is located in Marin County, California. There are roughly 1,143 residents, living in 504 households. The average temperature for San Geronimo this time of the year is low of 52F and high of 80F. On average, San Geronimo gets about 0.06 inches of precipitation in July. Most residents are home owners (68%), have a post secondary degree (61%) and are single, no kids (45%).
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