Anza, CA has a population of 2,507 and is the 9,835th largest city in the United States. The population density is 91 per sq mi which is 61% lower than the California average and equal to the national average. The median age in Anza is 46 which is approximately 28% higher than the California average of 36. In Anza, 62% of the population over 15 years of age are married, 83% speak English and 10% speak Spanish. 64% of Anza residents were born in California, 24% were born out of state, 0% were born outside of the United States and 12% were foreign born.