Avalon, CA has a population of 3,767 and is the 7,716th largest city in the United States. The population density is 1,283 per sq mi which is 452% higher than the California average and 1316% higher than the national average. The median age in Avalon is 34 which is approximately 5% lower than the California average of 36. In Avalon, 48% of the population over 15 years of age are married, 44% speak English and 56% speak Spanish. 62% of Avalon residents were born in California, 15% were born out of state, 0% were born outside of the United States and 23% were foreign born.