Channel Islands Beach, CA has a population of 2,954 and is the 8,888th largest city in the United States. The population density is 7,315 per sq mi which is 3048% higher than the California average and 7974% higher than the national average. The median age in Channel Islands Beach is 46 which is approximately 28% higher than the California average of 36. In Channel Islands Beach, 51% of the population over 15 years of age are married, 88% speak English and 4% speak Spanish. 48% of Channel Islands Beach residents were born in California, 42% were born out of state, 1% were born outside of the United States and 8% were foreign born.