Oceanside is a coastal examination city located on California's South Coast. It is a third-largest city in San Diego County, California as good as 15th-largest city in Southern California. The city had a competition of about 183,095 as of January 2010. The city has equates to thespian expansion given 1970, when a competition was 45,000. Much of a city's area was grown in to single-family home tracts during a 1970s as good as 1980s. Since a 1990s, augmenting blurb as good as industrial expansion have diversified Oceanside's trade base. Although a area was first composed by Native Americans, a first European explorers arrived in 1769. The Spanish missionaries underneath Father Junipero Serra founded Mission San Luis Rey de Francia on a former site of a Luiseño Indian encampment on a banks of a San Luis Rey River. In a early 19th century, a pass of husbandry as good as extending altered a landscape of what would spin Oceanside. The area - identical to all of California - was underneath Spanish, afterwards in 1821 underneath Mexican rule, as good as still by a U.S. in 1848. In a late 1850s, Andrew Jackson Myers lived in San Joaquin County. A local of LaSalle County, Illinois, he returned in a late 1880s as good as lived in San Luis Rey. In 1882 Myers changed on a land that was a bizarre locale site for Oceanside. A obvious for a land was expelled in 1883 by a emperor government. In a 20th century, Oceanside was a beach locale clinging to activities on a 6-mile (9.7 km) dilate of beaches. Residential areas identical to downtown (built in a 1890s), South Oceanside (built in a 1920s as good as 1930s), as good as developments east of Interstate 5 (built after World War II) have been available as good as remodeled when these houses have been counsel to have chronological value. of Oceanside was suburban expansion as good as a gratification for newcomers to overcome in to afterwards comparatively affordable housing.