Old Lycoming Township is a township in Lycoming County, Pennsylvania, United States. The population was 4,973 at the 2020 census down from 4,938 in 2010. It is part of the Williamsport Metropolitan Statistical Area. Pay Your Sewer Bill News & Notices Spring Cleanup and Mulch Days04/21/2024 Supervisors’ Meeting Agenda04/08/2024 Supervisors’ Meeting Agenda03/11/2024 Agenda-Special-Supervisors-Meeting-September-2023-RevisedDownload Agenda-Special-Supervisors-Meeting-September-2023-1Download