Treasurer - Tax Collector

The Treasurer-Tax Collector’s Office proudly serves the residents and taxpayers of San Joaquin County. Our mission is to ensure the safekeeping of public funds while maintaining liquidity and maximizing earnings in a conservative and prudent matter. We strive to provide the highest level of service in a professional, courteous, and efficient manner as we collect taxes and revenues critical to local government operations that benefit San Joaquin County and its citizens.

In an effort to better serve you, we welcome your comments and suggestions. Please e-mail us at and thank you for visiting our website!

Phonxay Keokham, CPA
Treasurer-Tax Collector


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Phonxay Keokham, CPA
Treasurer-Tax Collector
Treasurer-Tax Collector
44 North San Joaquin Street
First Floor, Suite 150
Stockton, CA 95202
Treasurer-Tax Collector's Office
P.O. Box 2169
Stockton, CA 95201-2169
Phone: (209) 468-2133
Fax: (209) 468-2158
8:30 AM - 4:30 PM Mon-Fri
Excluding holidays. Open until 5:00 PM on delinquent dates.

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