Contra Costa County Treasurer -Tax Collector

Russell Watts

Russell V. Watts

Treasurer-Tax Collector
Phone: (925) 957-5280

Finance Building

625 Court St., Ste 100
Martinez CA 94553
Driving Directions

Group Photo in Front of Court House


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Mailing Address

P.O. Box 631
Martinez, CA 94553

Walk-ins Hours

Monday through Friday
8 a.m. to 5 p.m.

Call Center Hours

Monday through Friday
9 a.m. to 4 p.m.

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  1. Unsecured Taxes Due September 3rd

    Normally due August 31, but because this date falls on a holiday weekend, the due date has been extended to Tuesday, September 3rd. AVOID THE LINE. PAY ONLINE! Read more...
  2. Treasury Oversight Committee Quarterly Meeting

    Meetings are held quarterly on the third Tuesday of February, May, August and November starting at 3:00 PM in Room B-001 of the County Finance Building, located at 625 Court St., Martinez, CA 94553. Read more...
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