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County of Sonoma, California

ClerkRecorderAssessorRegistrar of Voters   

Contact Us

The divisions of the Sonoma County Clerk-Recorder-Assessor are open Monday through Friday from 8:00 a.m. to 5:00 p.m. We are located in Santa Rosa, at the County of Sonoma Administration Center and provide customer service at the following locations:

Customer Service Locations

The Assessor

Office Location 5 8 5 Fiscal Drive, Suite 103 dash-F;
Santa Rosa, CA.
Mailing Address Sonoma County Assessor
5 8 5 Fiscal Drive, Suite 104 dash-F;
Santa Rosa, CA; 9 5 4 0 3.
Assessor General Information (707) 565-1888.
24 Hour Property Information (707) 565-3010.
Assessor FAX number (707) 565-3317.
Assessor Web Site slash/assessor.
Assessor Email Address
Business Property Email Address
Business Property Information (707) 565-7380.
Business Property FAX (707) 565-8343.
Accessibility Assistance (707) 565-3811 .
Información en Español (Lunes a Jueves) (707) 565-6075

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The County Clerk

Office Location 2300 County Center Drive, Suite B-177 ;
Santa Rosa, CA.
Mailing Address Sonoma County Clerk
2300 County Center Drive, Suite B-177 ;
Santa Rosa, CA; 9 5 4 0 3.
County Clerk General Information (707) 565-3700.
24 Hour Information (707) 565-3800.
County Clerk FAX (707) 565-3957.
County Clerk Web Site slash/clerk.
County Clerk Email Address
Información en Español (Lunes a Viernes) (707) 565-3800

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The Recorder

Office Location is 5 8 5 Fiscal Drive, Suite 103 dash-F;
Santa Rosa, CA.
Mailing Address Sonoma County Recorder
PO Box 1 7 0 9;
Santa Rosa, CA; 9 5 4 0 2.
Recorder General Information (707) 565-2651.
Recorder FAX number (707) 565-3905.
Recorder Web Site slash/recorder.
Recorder Email Address
Recorder Copy Center (707) 565-3250.
Recorder Administration (707) 565-3246.
La Información en Español (707) 565-2651.

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The Registrar of Voters.

Office Location 43 5 Fiscal Drive;
Santa Rosa, CA.
Mailing Address Sonoma County Registrar of Voters
PO Box 11485 ;
Santa Rosa, CA 95406-1485.
Registrar of Voters General Information (707) 565-6800.
Registrar of Voters FAX (707) 565-6843.
Registrar of Voters Web Site
Election Information
Voter Registration Information
Vote by Mail Information
Campaign Information
Poll Worker Information
Ordering maps and/or Election Data

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Before visiting or contacting us, please note our holiday schedule below.

Other Contact Information

Email • Correo Electrónico.

William Rousseau cra at

2016 Holidays • Las Vacaciones Observaron.

Friday, January 1 New Year's Day
Monday, January 18 Martin Luther King, Jr. Day
Friday, February 12 Lincoln's Birthday
Monday, February 15 Presidents' Day
Monday, May 30 Memorial Day
Monday, July 4 Independence Day
Monday, September 5 Labor Day
Friday, November 11 Veteran's Day
Thursday, November 24 Thanksgiving Day
Friday, November 25 Day after Thanksgiving
Monday, December 26 Christmas Day Observed

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This page contains a Location Map for the Offices of the Sonoma County Clerk-Recorder-Assessor, or in Spanish: una • Mapa de Ubicación.

The map presents a comprehensive view of the Sonoma County Administrative Center in Santa Rosa. It shows locations of major buildings and roadways and featuers pointers showing the locations of the offices of the Sonoma County Clerk-Recorder-Assessor. Map to Clerk-Recorder-Assessor Offices

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Important Notice:

The staff of the Clerk-Recorder-Assessor's Office are forbidden by California legal codes to practice law or provide legal advice; this prohibition includes giving advice about what forms you might need or how you should fill them out.

Please explore the following links...


Green Globe

Registrar of Voters Going Green Initiative

1. Register to Vote
2. Apply to Vote by Mail
3. Get your Sample Ballot online