| Capital: | Brookville |
|---|---|
| Origen y Formación del condado: | Parts of Lycoming County. Attached to Westmoreland County until 1806 and to Indiana County until 1830. |
| Población: | 45,200 habitantes |
| Área: | 657 sq mi |
| Localización del condado dentro de Pennsylvania: |
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Localidades en Jefferson, Pennsylvania
- Anita
- Barnett Township Jefferson County
- Beaver Township Jefferson County
- Bell Township Jefferson County
- Big Run Jefferson County
- Brockway
- Brookville
- Clover Township
- Corsica
- Crenshaw
- De Lancey
- Eldred Township Jefferson County
- Falls Creek
- Frostburg
- Gaskill Township
- Heath Township
- Henderson Township Jefferson County
- Knox Dale
- Knox Township Jefferson County
- Mccalmont Township
- Oliveburg
- Oliver Township Jefferson County
- Perry Township Jefferson County
- Pine Creek Township Jefferson County
- Polk Township Jefferson County
- Porter Township Jefferson County
- Punxsutawney
- Reynoldsville
- Ringgold Township
- Rose Township
- Sigel
- Snyder Township Jefferson County
- Snyder Township
- Sprankle Mills
- Stump Creek
- Summerville
- Sykesville
- Timblin
- Union Township Jefferson County
- Valier
- Walston
- Warsaw Township
- Washington Township Jefferson County
- Winslow Township
- Worthville
- Young Township Jefferson County