San Fernando, CA has a population of 24,396 and is the 1,787th largest city in the United States. The population density is 10,276 per sq mi which is 4322% higher than the California average and 11242% higher than the national average. The median age in San Fernando is 32 which is approximately 11% lower than the California average of 36. In San Fernando, 49% of the population over 15 years of age are married, 20% speak English and 78% speak Spanish. 60% of San Fernando residents were born in California, 4% were born out of state, 1% were born outside of the United States and 35% were foreign born.