Pismo Beach, CA has a population of 7,984 and is the 4,689th largest city in the United States. The population density is 2,218 per sq mi which is 855% higher than the California average and 2348% higher than the national average. The median age in Pismo Beach is 54 which is approximately 49% higher than the California average of 36. In Pismo Beach, 62% of the population over 15 years of age are married, 90% speak English and 4% speak Spanish. 57% of Pismo Beach residents were born in California, 33% were born out of state, 5% were born outside of the United States and 6% were foreign born.