Spreckels, CA has a population of 745 and is the 17,080th largest city in the United States. The population density is 6,099 per sq mi which is 2524% higher than the California average and 6632% higher than the national average. The median age in Spreckels is 46 which is approximately 28% higher than the California average of 36. In Spreckels, 70% of the population over 15 years of age are married, 96% speak English and 0% speak Spanish. 77% of Spreckels residents were born in California, 21% were born out of state, 0% were born outside of the United States and 2% were foreign born.