| | Abbottstown borough | 4200100116 | PA | 4200116 | Incorporated Place | Gettysburg, PA 23900 | Harrisburg-York-Lebanon,
PA 276 | | |
| | Arendtsville borough | 4200102928 | PA | 4202928 | Incorporated Place | Gettysburg, PA 23900 | Harrisburg-York-Lebanon,
PA 276 | | |
| | Aspers CDP | 4200103312 | PA | 4203312 | Census Designated Place | Gettysburg, PA 23900 | Harrisburg-York-Lebanon,
PA 276 | | |
| | Bendersville borough | 4200105536 | PA | 4205536 | Incorporated Place | Gettysburg, PA 23900 | Harrisburg-York-Lebanon,
PA 276 | | |
| | Biglerville borough | 4200106296 | PA | 4206296 | Incorporated Place | Gettysburg, PA 23900 | Harrisburg-York-Lebanon,
PA 276 | | |
| | Bonneauville borough | 4200107560 | PA | 4207560 | Incorporated Place | Gettysburg, PA 23900 | Harrisburg-York-Lebanon,
PA 276 | | |
| | Carroll Valley borough | 4200111472 | PA | 4211472 | Incorporated Place | Gettysburg, PA 23900 | Harrisburg-York-Lebanon,
PA 276 | | |
| | Cashtown CDP | 4200111576 | PA | 4211576 | Census Designated Place | Gettysburg, PA 23900 | Harrisburg-York-Lebanon,
PA 276 | | |
| | East Berlin borough | 4200120792 | PA | 4220792 | Incorporated Place | Gettysburg, PA 23900 | Harrisburg-York-Lebanon,
PA 276 | | |
| | Fairfield borough | 4200124560 | PA | 4224560 | Incorporated Place | Gettysburg, PA 23900 | Harrisburg-York-Lebanon,
PA 276 | | |