Yorba Linda, CA has a population of 67,362 and is the 547th largest city in the United States. The population density is 3,489 per sq mi which is 1401% higher than the California average and 3751% higher than the national average. The median age in Yorba Linda is 43 which is approximately 19% higher than the California average of 36. In Yorba Linda, 68% of the population over 15 years of age are married, 75% speak English and 7% speak Spanish. 59% of Yorba Linda residents were born in California, 21% were born out of state, 1% were born outside of the United States and 19% were foreign born.