Yes, U.S. cities using ParkingTicketPayment.com to process ticket payments allow drivers to submit payment using a PayPal account. The Massachusetts Bay Transit Authority and the city of Shreveport, Louisiana accept payments online through PayPal accounts as of 2015.
Policies for paying parking tickets and violations differ by city. Although some cities currently allow online payments, many still do not. Some cities, like New York City, are currently deciding whether online payment systems like PayPal prove a more viable option than in-person and mail-in payments, according to TechCrunch. For the most accurate information regarding a specific region, the local parking enforcement authority should provide a list of current payment methods available.