Lycoming County, Pennsylvania
County seat: Williamsport · Population 112,587 (2025) · 1,229 sq mi
Lycoming County is the 29th most populous of Pennsylvania's 67 counties, with 112,587 people (2025 estimate). Its county seat is Williamsport. It is part of the District 3 region, one of the 11 PennDOT engineering districts. The map shows its 10 cities and towns and the 9 neighboring counties.
Lycoming County facts
- County seat
- Williamsport
- Population (2025 estimate)
- 112,587 −1.4% since 2020
- Land area
- 1,229 sq mi 1st largest of 67
- Water area
- 15 sq mi
- Population density
- 92 per sq mi
- Established
- 1795
- Named after
- Lycoming Creek creek in Pennsylvania
- Largest city
- Williamsport 27,384
- Median household income
- $63,917
- Cities and towns
- 10 plus 5 CDPs
- ZIP codes
- 30
- Time zone
- Eastern
- FIPS code
- 42081
Cities and towns in Lycoming County
Lycoming County has 10 incorporated cities, towns and villages. Populations count the people living inside Lycoming County; cities that cross a county line also list the other counties.
| Name | Type | Population 2025 | Also in |
|---|---|---|---|
| Williamsport (county seat) | City | 27,384 | |
| South Williamsport | Borough | 6,124 | |
| Montoursville | Borough | 4,635 | |
| Jersey Shore | Borough | 4,048 | |
| Muncy | Borough | 2,383 | |
| Hughesville | Borough | 2,089 | |
| Montgomery | Borough | 1,538 | |
| Duboistown | Borough | 1,184 | |
| Picture Rocks | Borough | 635 | |
| Salladasburg | Borough | 243 |
Unincorporated communities (CDPs)
Census-designated places are communities without their own city government; the county provides their services.
| Community | Population | Also in |
|---|---|---|
| Kenmar | 5,077 | |
| Garden View | 2,637 | |
| Faxon | 727 | |
| Oval | 478 | |
| Rauchtown | 77 | Clinton County |
ZIP codes in Lycoming County
30 ZIP codes reach into Lycoming County. ZIP codes ignore county lines, so some also cover a neighboring county.
- 16930 also Tioga County
- 16938 also Tioga County
- 17701 also Sullivan County
- 17702
- 17720
- 17723
- 17724 also Bradford and Tioga counties
- 17727 also Tioga County
- 17728
- 17737 also Sullivan County
- 17739
- 17740 also Clinton County
- 17742
- 17744
- 17745 also Clinton County
- 17752
- 17754
- 17756 also Northumberland, Montour and Columbia counties
- 17758 also Sullivan County
- 17762
- 17763
- 17765 also Tioga and Bradford counties
- 17769
- 17771
- 17774 also Columbia County
- 17776
- 17810 also Union County
- 17814 also Columbia, Sullivan and Luzerne counties
- 17846 also Columbia County
- 18619 also Sullivan County
Population of Lycoming County, 2020–2025
Lycoming County shrank by 1,612 people (−1.4%) between April 2020 and July 2025: 1,866 more deaths than births and a net gain of 267 people from migration.
| Year (July 1) | Population |
|---|---|
| 2020 | 114,120 |
| 2021 | 113,579 |
| 2022 | 113,195 |
| 2023 | 113,192 |
| 2024 | 112,918 |
| 2025 | 112,587 |
Neighboring counties
- Clinton County west · 37,870 people
- Tioga County north · 40,502 people
- Sullivan County east · 5,856 people
- Union County south · 42,313 people
- Columbia County southeast · 66,193 people
- Northumberland County southeast · 89,920 people
- Montour County southeast · 17,868 people
- Potter County northwest · 15,897 people
- Bradford County northeast · 59,600 people
Printable Lycoming County map
The PDF is a vector file with real text: it prints sharp on Letter paper and you can search it for a town. The PNG is 2400 pixels wide for slides and documents. Both are free to use with a credit to WhichCounty.
- PDF (Letter) (110 KB)
- PNG (2400 px) (86 KB)
Paste this code to embed the map on your site:
Sources
- Boundaries: U.S. Census Bureau, 2025 Cartographic Boundary Files (1:500,000).
- Population: Census Bureau county and city estimates, Vintage 2025. CDP populations: American Community Survey 2020–2024.
- Places and ZIP codes: Census Bureau 2026 Gazetteer and 2020 ZIP Code Tabulation Area relationship files.
- County seat, founding year and name origin: Wikidata (CC0), checked against state sources.
Back to the Pennsylvania county map with all 67 counties. Found an error? Tell us.