Azusa, CA has a population of 47,420 and is the 854th largest city in the United States. The population density is 4,911 per sq mi which is 1954% higher than the California average and 5320% higher than the national average. The median age in Azusa is 28 which is approximately 21% lower than the California average of 36. In Azusa, 43% of the population over 15 years of age are married, 41% speak English and 50% speak Spanish. 58% of Azusa residents were born in California, 10% were born out of state, 1% were born outside of the United States and 32% were foreign born.