San Luis Obispo (/sæn ˌluːɪs əˈbɪspoʊ/; Spanish for "St. Louis, Bishop [of Toulouse]", pronounced [san ˈlwis oˈβispo]; Obispeño: tiłhini, "Place of the full moon" ), or SLO (/sloʊ/) for short, is a city in the U.S. state of California, located roughly midway between Los Angeles and San Francisco on the Central Coast of Southern California. The population was 45,119 at the 2010 census. The population of San Luis Obispo County was 269,637 in 2010.
Founded in 1772 by Spanish Franciscan Junípero Serra, San Luis Obispo is one of California's oldest communities. Serra's original mission was named after the 13th-century saint and bishop Louis of Toulouse. The city, locally referred to as San Luis, SLO, or SLO Town (as its county is also referred to as SLO) is the county seat of San Luis Obispo County and is adjacent to California Polytechnic State University.
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