what part of california is santa rosa in
Santa Rosa, California Santa Rosa is a city in and the county seat of Sonoma County, California, United States.[10] Its estimated 2014 population was 174,170.[11] Santa Rosa is the largest city in California's Redwood Empire, Wine Country and the North Bay; the fifth most populous city in the San Francisco Bay Area after San Jose, San Francisco, Oakland, and Fremont; and the 28th most populous city in California.