Oceanside

Oceanside is the third-largest city in San Diego County,

Oceanside is the third-largest city in San Diego County, California. It is located about 30 miles north of San Diego, and, like its name states, sits beside the Pacific Ocean. Together with Carlsbad and Vista, it forms what is known as the tri-city area.

The city is located just south of Camp Pendleton, the busiest military base in the United States. Oceanside has experienced dramatic growth since 1970 when its population was 45,000.

Much of the city’s area was developed into single-family home tracts during the 1970s and 1980s. Since the 1990s, increased commercial and industrial development have diversified Oceanside’s economic base.

  • Population in July 2008: 169,684.
  • Zip codes: 92054, 92056, 92057, 92058.
  • Median resident age: 33.3 years
  • California median age: 33.3 years
  • Estimated median household income in 2008: $61,725 (data provided by city-data.com)

Discover:

  • Fire Mountain Oceanside
  • Henie Hills Oceanside
  • South Oceanside

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(all data current as of 10/16/2025)

Listing information deemed reliable but not guaranteed. Read full disclaimer.

 
 

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