Aptos is a census-designated place (CDP) in Santa Cruz County, California, United States. The population was 6,220 at the 2010 census. Aptos is an unincorporated area of Santa Cruz county, consisting of several small communities. The combined population of the CDPs generally considered as parts of Aptos is around 25,000: Aptos Village, the main business and commerce center on the northwest side of Hwy 1, between State Park Drive and Rio Del Mar Blvd.