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 Supervisors’ Meeting Agenda03/11/2024 Tax Collector Office Hours 202402/27/2024 Special Supervisors’ Meeting02/21/2024 Agenda-Special-Supervisors-Meeting-September-2023-RevisedDownload Agenda-Special-Supervisors-Meeting-September-2023-1Download