Does your insurance company legally have to give you a grace period after you are cancelled?

Insurance Grace Period

No, any grace period would have passed before the policy went to cancelled status. Once the policy is cancelled that means any grace period that may have been afforded will have expired.

If you were still within any regulatory grace period then your policy will not be in cancelled status, it would be in cancellation pending status.

They are not legally obligated, most carriers do give you a time to re-instate however