Anaheim, CA has a population of 346,776 and is the 56th largest city in the United States. The population density is 6,947 per sq mi which is 2889% higher than the California average and 7567% higher than the national average. The median age in Anaheim is 34 which is approximately 6% lower than the California average of 36. In Anaheim, 52% of the population over 15 years of age are married, 38% speak English and 45% speak Spanish. 51% of Anaheim residents were born in California, 11% were born out of state, 1% were born outside of the United States and 37% were foreign born.