Department Functions Current year tax information Collection of secured and supplemental property taxes Collection of unsecured taxes Collection of redemption/prior year delinquent taxes Location & Hours Tax Collector 675 Texas Street Suite 1900 Fairfield, California 94533 Office hours: 8:30am - 4:00pm Phone hours: 10:00am - 12:00pm and 1:00pm - 3:00pm (707) 784-7485 [email protected]