Anderson, CA has a population of 10,156 and is the 3,899th largest city in the United States. The population density is 1,594 per sq mi which is 586% higher than the California average and 1659% higher than the national average. The median age in Anderson is 35 which is approximately 3% lower than the California average of 36. In Anderson, 53% of the population over 15 years of age are married, 92% speak English and 5% speak Spanish. 76% of Anderson residents were born in California, 20% were born out of state, 0% were born outside of the United States and 3% were foreign born.