Rancho Santa Fe, CA has a population of 2,763 and is the 9,215th largest city in the United States. The population density is 411 per sq mi which is 77% higher than the California average and 354% higher than the national average. The median age in Rancho Santa Fe is 49 which is approximately 35% higher than the California average of 36. In Rancho Santa Fe, 67% of the population over 15 years of age are married, 78% speak English and 11% speak Spanish. 37% of Rancho Santa Fe residents were born in California, 45% were born out of state, 2% were born outside of the United States and 15% were foreign born.