How do I contact ISO?

Get the contact information for Insurance Services Office (ISO)

WSRB is Washington state's independent rating bureau. We provide Forms, Loss Costs and Protection Classes for Washington state only.

If you have questions about these for a state without an independent rating bureau, contact ISO at 1-800-444-4554. For more information about ISO, visit its website

If you have questions about these for one of the following states, contact its independent rating bureau through the website links below.


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