It's hard to say with any certainty, but if your insurer was not involved in the claims process they would probably never know. If they do become involved they would likely know that a claim had gone through another company.
It's possible that you may be incurring a surcharge for the out-of-state vehicle, but I don't know any company that currently employs this practice. However, the vehicle history you mentioned can change your rates.
If you were never cited for the accident and never filed a claim, there should be no insurance record of your accident. Insurance companies generally run two reports when you sign up for new insurance — your motor vehicle report (MVR) and another for claims history (CLUE). If they're clean, they should show no record of the accident and your rate should be unaffected.