
U.S. Post Office · National Register of Historic Places
Williamsport’s story
257 years in pictures
Census counts: 344 in 1810, a peak of 45,729 in 1930, 27,754 in 2020. The archive holds 12 old photos and papers going back to 1789 and 3 maps from 1954 on.
8 places on the National Register of Historic Places.
- 1769Williamsport is settled
Explore the history →
Getting set upMoving to Williamsport: who provides what
Who provides power, water and the rest in Williamsport, and how to reach them.
The full setup list →EPA SDWIS (Oct 9, 2026) · HIFLD + EIA-861 2025 · Census 2020 ZCTAs · NCES 2024–25 · registration: vote.gov, updated Nov 18, 2024.