Northumberland
- Asherton
- Atlas
- Augustaville
- Bear Gap
- Bear Valley
- Big Mountain
- Boyd
- Boydtown
- Cabel
- Chillisquaque
- Chulasky
- Connersville
- Dalmatia
- Deibler
- Delaware Run
- Dewart
- Diamondtown
- Dooleyville
- Dornsife
- Dunkelbergers
- East Lewisburg
- Elysburg
- Excelsior
- Fairview-Ferndale
- Fishers Ferry
- Gowen City
- Greenback
- Greenbrier
- Hamilton
- Hebe
- Helfenstein
- Herndon
- Hunter
- Kapp
- Kapp Heights
- Keefers
- Kipps Run
- Klines Grove
- Kneass
- Knoebels Grove
- Kulpmont
- Kulps
- Lantz
- Leck Kill
- Line Mountain
- Lithia Springs
- Locust Gap
- Locust Summit
- Malta
- Mandata
- Marion Heights
- Marshallton
- Mayfair
- McEwensville
- Meadowview
- Merrian
- Mile Run
- Millers Crossroads
- Milton
- Montandon
- Mount Carmel
- Natalie
- North Hills
- Northumberland
- Oak Park
- Oaklyn
- Otto
- Overlook
- Patricksburg
- Paxinos
- Potts Grove
- Quitman
- Ranshaw
- Rebuck
- Red Cross
- Reed
- Resler
- Riverside
- Rushtown
- Sagon
- Seven Points
- Shamokin
- Snydertown
- Stonington
- Strong
- Sunbury
- Tharptown
- Trevorton
- Turbotville
- Urban
- Watsontown
- West Cameron
- Wolfs Crossroads
- Wolverton