The San Joaquin County Historical Society focuses on preserving and revealing the history of San Joaquin county and operates the Museum under an agreement with the County of San Joaquin.  Here is some information on the county.

San Joaquin county is one of the original California counties, created in 1850 at statehood.  It is named for one of its major waterways, the San Joaquin River.  The county covers 1,426 square miles (3,694 km) and has a population of about 660,000 (2005).

Agriculture continues to be the mainstay of the county's economy, worth $6.6 billion in 2007. According to the 2007 Agriculture Commissioner's Crop Report, milk was worth $466.1 million, grapes $216.9 million, cherries $201.7 million, almonds $158.9 million, walnuts $129.4 million, tomatoes $125.4 million, and cattle and calves were worth $103.5 million. Other major crops included hay, nursery and woody ornamentals, apples, and asparagus. No county in the United States produced more asparagus or walnuts and compared to other California counties, San Joaquin was the leading producer of cherries, apples, corn, and pumpkins.

Tourism is an emerging industry in northern San Joaquin county, primarily due to the Lodi wine appellation and the efforts of the Lodi-Woodbridge Winegrape Commission, the Lodi Convention and Visitors Bureau, and the Stockton Convention and Visitors Bureau.

San Joaquin County is growing rapidly and regional planners expect its population to double by the year 2030 and to triple by 2050—the fifth fastest growing county in California.

Official San Joaquin County Website
State Archives of San Joaquin County History
San Joaquin Farm Bureau Federation

Stockton Chamber of Commerce
Lodi Chamber of Commerce
Tracy Chamber of Commerce
Manteca Chamber of Commerce
Lathrop Chamber of Commerce
Ripon Chamber of Commerce
Escalon Chamber of Commerce
Linden-Peters Chamber of Commerce
Clements-Lockeford Chamber of Commerce