| 1 | Boiling Springs CDP | 7,992 |
| 2 | Carlisle borough (west) | 7,940 |
| 3 | Mechanicsburg borough (north-northeast 2) | 7,168 |
| 4 | Carlisle Barracks CDP (northeast) | 7,110 |
| 5 | New Kingstown CDP (northeast) | 7,027 |
| 6 | Plainfield CDP (northwest) | 6,892 |
| 7 | Carlisle Barracks CDP (west-northwest) | 6,634 |
| 8 | Mechanicsburg borough (north-northeast 1) | 6,437 |
| 9 | New Kingstown CDP (south) | 6,422 |
| 10 | Shiremanstown borough (north) | 6,360 |
| 11 | Messiah College CDP (north-northwest) | 6,346 |
| 12 | Newburg borough (southeast) | 6,288 |
| 13 | Mount Holly Springs borough (east-northeast) | 6,045 |
| 14 | Carlisle Barracks CDP (southwest) | 5,962 |
| 15 | Newburg borough (northwest) | 5,777 |
| 16 | Messiah College CDP (east) | 5,741 |
| 17 | Enola CDP (west-southwest) | 5,627 |
| 18 | Schlusser CDP | 5,614 |
| 19 | Enola CDP (east-northeast) | 5,415 |
| 20 | Mount Holly Springs borough (west-southwest) | 5,348 |
| 21 | Mechanicsburg borough (south) | 5,233 |
| 22 | New Kingstown CDP (north-northwest 2) | 5,225 |
| 23 | Camp Hill borough (northwest) | 5,158 |
| 24 | New Cumberland borough (west-southwest) | 5,062 |
| 25 | New Kingstown CDP (west-southwest) | 5,060 |
| 26 | Plainfield CDP (northeast) | 4,912 |
| 27 | Lower Allen CDP (south-southwest) | 4,898 |
| 28 | Mechanicsburg borough (south-southeast) | 4,882 |
| 29 | Enola CDP (north-northeast) | 4,836 |
| 30 | Carlisle borough (south-southeast) | 4,702 |
| 31 | Lemoyne borough | 4,697 |
| 32 | Shiremanstown borough (south) | 4,687 |
| 33 | Mechanicsburg borough (north) | 4,421 |
| 34 | Wormleysburg borough (southwest) | 4,364 |
| 35 | Newburg borough (south-southwest) | 4,349 |
| 36 | Plainfield CDP (south-southeast) | 4,335 |
| 37 | Wormleysburg borough (northeast) | 4,307 |
| 38 | Mechanicsburg borough (southwest) | 4,302 |
| 39 | Camp Hill borough (southeast) | 4,301 |
| 40 | New Kingstown CDP (southeast) | 4,173 |
| 41 | Camp Hill borough (south-southeast) | 3,848 |
| 42 | New Cumberland borough (east) | 3,826 |
| 43 | New Cumberland borough (north-northwest) | 3,705 |
| 44 | New Kingstown CDP (north-northeast) | 3,589 |
| 45 | Newburg borough (north-northeast) | 3,283 |
| 46 | Lower Allen CDP (north-northeast 2) | 3,103 |
| 47 | Carlisle borough (north) | 2,986 |
| 48 | Shippensburg University CDP | 2,869 |
| 49 | New Kingstown CDP (north-northwest 1) | 2,853 |
| 50 | Lower Allen CDP (north-northeast 1) | 2,590 |
| 51 | Carlisle Barracks CDP (south) | 2,382 |
| 52 | Messiah College CDP (south-southwest) | 2,273 |
| 53 | Carlisle borough (north-northeast) | 2,065 |
| 54 | Shiremanstown borough (southeast) | 1,732 |
| 55 | Newville borough | 1,269 |