Trinidad is a seaside town in Humboldt County, located on the Pacific Ocean 8 miles (13 km) north of the Arcata-Eureka Airport and 15 miles (24 km) north of the college town of Arcata. Situated directly above its own North Coast harbor, California's smallest incorporated city (with a 2000 population of just 311) is noted for its spectacular coastline with ten public beaches and offshore rocks. These rocks are part of the California Coastal National Monument of which Trinidad is a Gateway City. This natural landmark is joined by three additional marine landmarks - the historic Trinidad Head Light, the Trinidad Memorial Lighthouse, and Humboldt State University's Fred Telonicher Marine Laboratory. Fishing operations related to Trinidad Harbor are vital to both local tourism and commercial fishery interests in the region. Trinidad lies at an elevation of 174 feet (53 m).