Alternative channels
Mail, text, and in-person payment instructions
Pay by text
Create or sign in to the online account, go to Profile, then Contact Information, enter the mobile number, open Profile > Manage Notifications, choose SMS, and enter the verification number sent to the phone. This enables bill, late, and interruption notifications; the page does not describe a text-to-pay keyword workflow.
Mail-in address
A dedicated this detail was not publicly posted. The reviewed Carrollton payment page describes bank bill-pay and in-person options but does not publish a current utility remittance P.O. Box.
Counters, drop boxes, and office hours
City Hall, first floor, 1945 East Jackson Road, Carrollton, TX 75006, Monday-Thursday 7:30 a.m.-5:30 p.m. and Friday 7:30-11:30 a.m.; cash, check, and card are accepted. A 24/7 drive-through kiosk is in the parking lot between City Hall and Municipal Court. A second kiosk is in the outer lobby of Hebron and Josey Public Library during library hours and accepts cards, checks, cash, and money orders. Fidelity Express authorized locations charge $1.50 per transaction.