Santa Ynez, CA has a population of 4,468 and is the 6,953rd largest city in the United States. The population density is 870 per sq mi which is 274% higher than the California average and 860% higher than the national average. The median age in Santa Ynez is 49 which is approximately 36% higher than the California average of 36. In Santa Ynez, 65% of the population over 15 years of age are married, 88% speak English and 6% speak Spanish. 61% of Santa Ynez residents were born in California, 26% were born out of state, 1% were born outside of the United States and 12% were foreign born.