Oceanside is a coastal city located on California's South Coast. It is the third-largest city in San Diego County, California. The city had a population of 167,086 at the 2010 census. Together with Carlsbad and Vista, it forms a tri-city area. Oceanside is located just south of Marine Corps Base Camp Pendleton.
Oceanside is at 33°12′42″N 117°19′33″W / 33.21167°N 117.32583°W / 33.21167; -117.32583 (33.211566, -117.325701).
According to the United States Census Bureau, the city has a total area of 42.2 square miles (109 km2), of which 41.2 square miles (107 km2) is land and 0.9 square miles ...
Source: Wikipedia (as of 04/11/2019). Read more from Wikipedia