| 1 | Allentown city (west-southwest 1) | 35% |
| 2 | Breinigsville CDP (east-southeast) | 26.1% |
| 3 | Unincorporated (southeast) | 23.3% |
| 4 | Allentown city (west-southwest 4) | 23% |
| 5 | Unincorporated (west-northwest) | 22.5% |
| 6 | Ancient Oaks CDP (north-northwest) | 22.4% |
| 7 | Ancient Oaks CDP (south-southeast) | 21.8% |
| 8 | Unincorporated (east-southeast 1) | 21.7% |
| 9 | Cetronia CDP | 20.4% |
| 10 | Unincorporated (west 1) | 20.4% |
| 11 | Unincorporated (south) | 20.3% |
| 12 | DeSales University CDP | 19.6% |
| 13 | Trexlertown CDP | 18.6% |
| 14 | Unincorporated (west 2) | 18.6% |
| 15 | Bethlehem city (south-southeast) | 18.1% |
| 16 | Schnecksville CDP (south-southeast) | 17.9% |
| 17 | Unincorporated (east-southeast 2) | 17.9% |
| 18 | Breinigsville CDP (west-northwest) | 17.2% |
| 19 | Unincorporated (northwest 2) | 16.9% |
| 20 | Bethlehem city (northwest) | 16.8% |
| 21 | Schnecksville CDP (north-northwest) | 16.8% |
| 22 | Laurys Station CDP (southwest) | 16.5% |
| 23 | Dorneyville CDP (west-northwest) | 16.3% |
| 24 | Allentown city (southwest 2) | 16% |
| 25 | Unincorporated (south-southeast 2) | 15.9% |
| 26 | Allentown city (southwest 1) | 15.7% |
| 27 | Wescosville CDP (east) | 15.1% |
| 28 | Wescosville CDP (west) | 14.9% |
| 29 | Bethlehem city (east-southeast) | 14.3% |
| 30 | Allentown city (west) | 13.7% |
| 31 | Emmaus borough (north-northwest) | 13.7% |
| 32 | Dorneyville CDP (east-southeast) | 13.5% |
| 33 | Laurys Station CDP (northeast) | 12.9% |
| 34 | Allentown city (southeast) | 12.2% |
| 35 | Egypt CDP | 12% |
| 36 | Bethlehem city (north-northwest) | 11.8% |
| 37 | Allentown city (west-southwest 2) | 11% |
| 38 | Coopersburg borough | 10.9% |
| 39 | Catasauqua borough | 10.5% |
| 40 | Unincorporated (south-southwest) | 10.3% |
| 41 | New Tripoli CDP | 10.1% |
| 42 | Fullerton CDP (west-northwest) | 10% |
| 43 | Slatington borough | 9.9% |
| 44 | Hokendauqua CDP | 9.6% |
| 45 | Alburtis borough | 9.5% |
| 46 | Unincorporated (north-northeast) | 8.8% |
| 47 | Allentown city (south-southeast 3) | 8.6% |
| 48 | Unincorporated (south-southeast 1) | 8.4% |
| 49 | Allentown city (west-southwest 3) | 8% |
| 50 | Emmaus borough (south-southeast) | 8% |
| 51 | Bethlehem city (southwest) | 7.8% |
| 52 | Slatedale CDP | 7.7% |
| 53 | Unincorporated (north) | 7.7% |
| 54 | Fountain Hill borough | 7.5% |
| 55 | Allentown city (east-northeast 1) | 7.3% |
| 56 | Unincorporated (east-northeast) | 7.2% |
| 57 | Fullerton CDP (north-northeast) | 7% |
| 58 | Macungie borough | 7% |
| 59 | Unincorporated (east) | 6.5% |
| 60 | Unincorporated (northwest 1) | 6.3% |
| 61 | Fullerton CDP (south) | 5.8% |
| 62 | Allentown city (northwest) | 5.5% |
| 63 | Allentown city (south) | 5.2% |
| 64 | Allentown city (east-northeast 2) | 5.1% |
| 65 | Allentown city (south-southeast 1) | 4.7% |
| 66 | Allentown city (northeast 1) | 4.6% |
| 67 | Allentown city (northeast 2) | 4.5% |
| 68 | Allentown city (south-southeast 2) | 4.5% |
| 69 | Allentown city (west-northwest 1) | 4.5% |
| 70 | Allentown city (north 1) | 4.2% |
| 71 | Fullerton CDP (east-southeast) | 4.2% |
| 72 | Allentown city (north-northwest) | 3.9% |
| 73 | Allentown city (west-northwest 2) | 3.5% |
| 74 | Coplay borough | 3.3% |
| 75 | Allentown city (east-southeast) | 2.5% |
| 76 | Allentown city (north-northeast 1) | 2.2% |
| 77 | Allentown city (east) | 1.9% |
| 78 | Allentown city (east-northeast 3) | 1.7% |
| 79 | Allentown city (north-northeast 2) | 1.6% |
| 80 | Allentown city (north 2) | 1.3% |
| 81 | Allentown city (north-northeast 3) | 1.2% |