| 1 | Valley Green CDP | 8,288 |
| 2 | Shiloh CDP (west) | 7,182 |
| 3 | Manchester borough (east) | 7,112 |
| 4 | Weigelstown CDP (west-northwest) | 6,928 |
| 5 | Windsor borough (northwest) | 6,885 |
| 6 | Jacobus borough (south) | 6,763 |
| 7 | Red Lion borough | 6,494 |
| 8 | York Haven borough | 6,358 |
| 9 | Jefferson borough (north-northeast) | 6,270 |
| 10 | Windsor borough (southeast) | 6,207 |
| 11 | Yorkana borough (west-southwest) | 6,084 |
| 12 | North York borough (northwest) | 6,013 |
| 13 | East Prospect borough (south-southeast) | 5,935 |
| 14 | Hallam borough (northeast) | 5,874 |
| 15 | New Freedom borough | 5,863 |
| 16 | Grantley CDP (south) | 5,743 |
| 17 | Pennville CDP (southeast 2) | 5,742 |
| 18 | Delta borough (southeast) | 5,669 |
| 19 | East York CDP (north-northwest) | 5,596 |
| 20 | Pennville CDP (west) | 5,525 |
| 21 | East York CDP (south-southeast) | 5,503 |
| 22 | Franklintown borough | 5,478 |
| 23 | Weigelstown CDP (south) | 5,318 |
| 24 | Wellsville borough (east-northeast) | 5,318 |
| 25 | Dallastown borough (southeast) | 5,276 |
| 26 | Pleasureville CDP (northwest) | 5,261 |
| 27 | Emigsville CDP (east-southeast) | 5,230 |
| 28 | Dillsburg borough (west) | 5,164 |
| 29 | Saginaw CDP | 5,127 |
| 30 | Shiloh CDP (north-northeast) | 5,085 |
| 31 | West York borough (south-southwest) | 5,081 |
| 32 | New Market CDP (south-southwest) | 5,080 |
| 33 | Wrightsville borough | 5,014 |
| 34 | Pennville CDP (north-northwest) | 4,993 |
| 35 | Manchester borough (west) | 4,943 |
| 36 | New Salem borough (southeast) | 4,934 |
| 37 | Glen Rock borough | 4,912 |
| 38 | Hallam borough (southwest) | 4,901 |
| 39 | New Market CDP (east) | 4,888 |
| 40 | Hanover borough (north-northwest) | 4,687 |
| 41 | Stewartstown borough (west-southwest) | 4,618 |
| 42 | North York borough (south) | 4,581 |
| 43 | Spry CDP (east-southeast) | 4,478 |
| 44 | Dillsburg borough (southwest) | 4,441 |
| 45 | Spring Grove borough (northwest) | 4,441 |
| 46 | Weigelstown CDP (northeast) | 4,416 |
| 47 | Hanover borough (east-northeast) | 4,399 |
| 48 | Spry CDP (west) | 4,391 |
| 49 | Jefferson borough (north) | 4,390 |
| 50 | Yorkana borough (east-northeast) | 4,320 |
| 51 | Stewartstown borough (northeast) | 4,265 |
| 52 | Lewisberry borough (northwest) | 4,244 |
| 53 | Hanover borough (west-southwest) | 4,232 |
| 54 | East Prospect borough (north-northwest) | 4,199 |
| 55 | Yorklyn CDP (south-southeast) | 4,186 |
| 56 | Dallastown borough (north) | 4,084 |
| 57 | Wellsville borough (south) | 3,997 |
| 58 | Parkville CDP (north) | 3,990 |
| 59 | Jefferson borough (southeast) | 3,919 |
| 60 | Lewisberry borough (southeast 2) | 3,916 |
| 61 | Grantley CDP (west) | 3,889 |
| 62 | Mount Royal CDP (west-northwest) | 3,861 |
| 63 | Yorklyn CDP (north-northwest) | 3,759 |
| 64 | Valley View CDP (southeast) | 3,713 |
| 65 | Pennville CDP (southeast 1) | 3,708 |
| 66 | Shiloh CDP (south) | 3,703 |
| 67 | Lewisberry borough (southeast 1) | 3,695 |
| 68 | Winterstown borough | 3,690 |
| 69 | Lewisberry borough (north) | 3,673 |
| 70 | West York borough (north-northeast) | 3,649 |
| 71 | Grantley CDP (northeast 2) | 3,600 |
| 72 | Emigsville CDP (west-northwest) | 3,596 |
| 73 | Spry CDP (north-northwest) | 3,595 |
| 74 | Hanover borough (south) | 3,574 |
| 75 | Wellsville borough (northwest) | 3,541 |
| 76 | York city (southwest) | 3,526 |
| 77 | Fawn Grove borough | 3,491 |
| 78 | Tyler Run CDP (east-southeast) | 3,487 |
| 79 | Jefferson borough (south) | 3,482 |
| 80 | Pleasureville CDP (southeast) | 3,385 |
| 81 | New Market CDP (northwest) | 3,328 |
| 82 | North York borough (east) | 3,293 |
| 83 | New Salem borough (northwest) | 3,226 |
| 84 | York city (west-northwest) | 3,126 |
| 85 | Valley View CDP (south) | 3,094 |
| 86 | Delta borough (northwest) | 3,050 |
| 87 | Loganville borough | 3,047 |
| 88 | Jefferson borough (west) | 3,034 |
| 89 | Mount Royal CDP (east-southeast) | 2,955 |
| 90 | Stewartstown borough (southeast) | 2,875 |
| 91 | Shrewsbury borough | 2,873 |
| 92 | Parkville CDP (south) | 2,841 |
| 93 | Cross Roads borough | 2,831 |
| 94 | Grantley CDP (northeast 1) | 2,795 |
| 95 | Valley View CDP (west-northwest) | 2,762 |
| 96 | Jacobus borough (north) | 2,758 |
| 97 | York city (east) | 2,734 |
| 98 | Dillsburg borough (northeast) | 2,706 |
| 99 | Tyler Run CDP (west-northwest) | 2,626 |
| 100 | York city (northeast) | 2,437 |
| 101 | Grantley CDP (east) | 2,208 |
| 102 | Valley View CDP (north-northwest 1) | 2,197 |
| 103 | Spring Grove borough (southeast) | 2,100 |
| 104 | Dallastown borough (west-southwest) | 1,750 |
| 105 | Valley View CDP (north-northwest 2) | 1,586 |
| 106 | York city (northwest) | 1,572 |
| 107 | Grantley CDP (north-northwest) | 1,379 |
| 108 | York city (southeast) | 1,281 |