Scotts Valley, CA has a population of 11,824 and is the 3,456th largest city in the United States. The population density is 2,560 per sq mi which is 1002% higher than the California average and 2726% higher than the national average. The median age in Scotts Valley is 39 which is approximately 8% higher than the California average of 36. In Scotts Valley, 61% of the population over 15 years of age are married, 86% speak English and 5% speak Spanish. 63% of Scotts Valley residents were born in California, 23% were born out of state, 1% were born outside of the United States and 12% were foreign born.