Las Flores, CA has a population of 5,671 and is the 5,970th largest city in the United States. The population density is 2,555 per sq mi which is 999% higher than the California average and 2720% higher than the national average. The median age in Las Flores is 33 which is approximately 8% lower than the California average of 36. In Las Flores, 68% of the population over 15 years of age are married, 78% speak English and 12% speak Spanish. 62% of Las Flores residents were born in California, 23% were born out of state, 1% were born outside of the United States and 14% were foreign born.