Portola, CA has a population of 2,082 and is the 10,788th largest city in the United States. The population density is 385 per sq mi which is 66% higher than the California average and 325% higher than the national average. The median age in Portola is 45 which is approximately 24% higher than the California average of 36. In Portola, 53% of the population over 15 years of age are married, 86% speak English and 12% speak Spanish. 68% of Portola residents were born in California, 25% were born out of state, 1% were born outside of the United States and 7% were foreign born.