Petaluma is a city in Sonoma County, part of the North Bay sub-region of the San Francisco Bay Area, located 37 mi north of San Francisco. Its population was 57,941 according to the 2010 Census.The Rancho Petaluma Adobe, located in Petaluma, is a National Historic Landmark. Its construction started in 1836 by order of General Mariano Guadalupe Vallejo, then Commandant of the San Francisco Presidio. It was the center of a 66,000 acre ranch stretching... Show more

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