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Marin County Department of Child Support Services

  • Phone Numbers
    (866) 901-3212 (toll–free 24-hour automated child support system)
    (415) 507–4068 (voice)
    (415) 473–4150 (fax)
  • Physical Address
    88 Rowland Way, Suite 200
    Novato, CA 94945–1408
  • Office Hours
    Monday through Friday, 8:00 AM to 4:00 PM
  • Accepting new applications:
    Tuesday, Wednesday & Thursday only from 8:00 AM to 3:00 PM
  • Mailing Address
    P.O. Box 6145
    Novato, CA 94948–6145
  • Web Site
    http://www.co.marin.ca.us/depts/FS/main/index.cfm