Summerland, CA has a population of 1,146 and is the 14,313th largest city in the United States. The population density is 578 per sq mi which is 149% higher than the California average and 538% higher than the national average. The median age in Summerland is 53 which is approximately 47% higher than the California average of 36. In Summerland, 46% of the population over 15 years of age are married, 80% speak English and 10% speak Spanish. 46% of Summerland residents were born in California, 37% were born out of state, 3% were born outside of the United States and 14% were foreign born.