Seaside is a city in Monterey County, California, United States, with a population of 33,025 as of the 2010 census. Seaside is located 2.25 miles east-northeast of Monterey, at an elevation of 33 feet. Seaside is the home of California State University, Monterey Bay and the Monterey College of Law, which are located on the site of the former military base Fort Ord.