Stockton California is the county seat of San Joaquin County. It was founded by Captain Charles Maria Weber in 1849 after he acquired Rancho Campo de los Franceses. The city is named after Robert F. Stockton[17] and was the first community in California to not have a name of Spanish or Native American origin. The city is located on the San Joaquin River in northern San Joaquin Valley and had an estimated population of 302,389 as of 2014. It is the 13th largest city in California and the 63rd largest city in the United States. It was named an All-America City in 1999 and again in 2004.