Santa Rosa Valley, CA has a population of 3,601 and is the 7,920th largest city in the United States. The population density is 520 per sq mi which is 124% higher than the California average and 474% higher than the national average. The median age in Santa Rosa Valley is 49 which is approximately 37% higher than the California average of 36. In Santa Rosa Valley, 70% of the population over 15 years of age are married, 87% speak English and 4% speak Spanish. 64% of Santa Rosa Valley residents were born in California, 23% were born out of state, 2% were born outside of the United States and 11% were foreign born.