Compton, CA has a population of 97,740 and is the 321st largest city in the United States. The population density is 9,746 per sq mi which is 4094% higher than the California average and 10657% higher than the national average. The median age in Compton is 30 which is approximately 17% lower than the California average of 36. In Compton, 44% of the population over 15 years of age are married, 37% speak English and 61% speak Spanish. 60% of Compton residents were born in California, 9% were born out of state, 1% were born outside of the United States and 31% were foreign born.