| Capital: | Kittanning |
|---|---|
| Origen y Formación del condado: | Parts of Allegheny, Lycoming, and Westmoreland Counties. |
| Población: | 68,941 habitantes |
| Área: | 664 sq mi |
| Localización del condado dentro de Pennsylvania: |
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Localidades en Armstrong, Pennsylvania
- Adrian
- Apollo
- Applewold
- Atwood
- Bethel Township Armstrong County
- Boggs Township Armstrong County
- Bradys Bend Township
- Burrell Township Armstrong County
- Cadogan Township
- Climax
- Cowanshannock Township
- Cowansville
- Dayton
- Distant
- East Franklin Township
- Edmon
- Elderton
- Ford City
- Ford Cliff
- Freeport
- Gilpin Township
- Hovey Township
- Kiskimere
- Kiskiminetas Township
- Kittanning
- Kittanning Township
- Leechburg
- Lenape Heights
- Madison Township Armstrong County
- Mahoning Township Armstrong County
- Manorville
- Manor Township Armstrong County
- Mc Grann
- North Apollo
- North Buffalo Township
- North Vandergrift Pleasant View
- Nu Mine
- Oak Ridge
- Orchard Hills
- Parker
- Parks Township
- Perry Township Armstrong County
- Pine Township Armstrong County
- Pleasant View
- Plumcreek Township
- Rayburn Township
- Redbank Township Armstrong County
- Rural Valley
- Sagamore
- Schenley
- Seminole
- South Bend Township
- South Bethlehem
- South Buffalo Township
- Spring Church
- Sugarcreek Township
- Templeton
- Valley Township Armstrong County
- Washington Township Armstrong County
- Wayne Township Armstrong County
- West Franklin Township
- West Hills
- West Kittanning
- Widnoon
- Worthington
- Yatesboro