Sonora, CA has a population of 4,810 and is the 6,631st largest city in the United States. The population density is 1,521 per sq mi which is 554% higher than the California average and 1579% higher than the national average. The median age in Sonora is 41 which is approximately 15% higher than the California average of 36. In Sonora, 54% of the population over 15 years of age are married, 89% speak English and 5% speak Spanish. 70% of Sonora residents were born in California, 20% were born out of state, 1% were born outside of the United States and 9% were foreign born.