santa rosa population
Population of Santa Rosa, CA. Last official estimated population of Santa Rosa city (Sonoma County**, California state) was 174,170 (year 2014)[1]. This was 0.055% of total US population and 0.44% of total California state population. Area of Santa Rosa city is 41.5 miÂ² (=107.5 kmÂ²)[6], in this year population density was 4,197.17 p/miÂ².