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Department of Child Support Services

How To Contact DCSS

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Additional Phone Numbers

1 (866) 901-3212 – California Child Support Automated Information System(IVR) and continental USA toll-free access to our office 
(707) 565-4242 – Ombudsperson

Fax Numbers

(707) 565-4020 - Administration
(707) 565-4018 - Child Support Officers


The Sonoma County DCSS has adopted a new policy of scheduling appointments instead of meeting with the public on a drop-in basis. The new appointment process was adopted in an effort to serve the public thoroughly and effectively with fewer staff resources and to help our staff manage their time more efficiently.  

Reasons for scheduling appointments vary, but may include assisting applicants with case opening paperwork, assisting case participants with modification documents, notarizing interstate petitions and title company documents or serving legal documents.  

Customers are requested to schedule phone or in-office appointments on a designated dates and times rather just dropping by our office. By scheduling an appointment ahead of time and by appearing (or being available by phone) at the appointed time, customers will be better served and we can be better prepared to provide assistance or to answer questions.

Phone Calls

To contact Sonoma County DCSS call 1-866-901-3212. Our telephone receptionists have been trained to answer many of your questions. If you need to speak with your case manager your message will be given to the case manager first thing the following morning and you can expect a call back within three (3) days. 

If you are calling for payment information, Contact the CA SDU at 1-866-901-3212 as it has the most up-to-date information. You may also obtain payment information by accessing Customer Connect at:

Email and Text Messaging

We will communicate with you by email or text messaging if you provide us with your email address and phone carrier for texting.

Text: 707-244-1066