The payment address is shown on the payment stub at the bottom of page one of your bill. See the image below. Don't have your bill? Write your account number on your check or money order and mail it to the address below. If you do have your bill, please include your payment stub. Do not send cash through the mail.
Frontier
PO Box 740407
Cincinnati, OH 45274-0407
To pay by registered mail or overnight delivery only, please include your payment stub, write your account number on your check or money order, and send them to:
Frontier
5050 Kingsley Drive
Cincinnati, OH 45227-1115