Brookdale is a census-designated place in Santa Cruz County, California. Brookdale sits at an elevation of 405 feet. It is located in the San Lorenzo Valley between Boulder Creek and Ben Lomond on Highway 9. The 2010 United States census reported Brookdale's population was 1,991.The ZIP Code is 95007 and the community is inside area code 831. There is no mail delivery in Brookdale, though no home is more than 1.5 miles from the post office.