| | Allentown, PA | Bowling Green, KY | United States |
| | 120,128 | 64,302 | 321,004,407 |
| | 51.6% | 50.8% | 50.8% |
| | 48.4% | 49.2% | 49.2% |
| | 31.8 | 27.2 | 37.8 |
| space3 | | | |
| | 116,398 | 56,407 | 308,745,538 |
| | 106,632 | 49,296 | 285,036,114 |
| | 105,090 | 40,641 | 251,960,433 |
| | 12.7% | 30.4% | 12.6% |
| | 14.3% | 58.2% | 27.4% |
| space4 | | | |
| | 6,845.7 | 1,659.7 | 90.9 |
| | 17.5 | 38.7 | 3,531,905.4 |
| | 0.5 | 0.3 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Allentown, PA | Bowling Green, KY | United States |
| | 7.6% | 5.8% | 6.2% |
| | 7.6% | 6.0% | 6.4% |
| | 7.1% | 5.9% | 6.5% |
| | 4.3% | 3.4% | 3.9% |
| | 5.8% | 11.8% | 4.1% |
| | 6.7% | 12.7% | 5.6% |
| | 15.7% | 14.4% | 13.7% |
| | 12.3% | 10.5% | 12.7% |
| | 11.4% | 10.0% | 13.4% |
| | 5.4% | 4.2% | 6.7% |
| | 4.4% | 4.0% | 6.0% |
| | 6.1% | 6.1% | 8.6% |
| | 3.7% | 3.5% | 4.4% |
| | 2.0% | 1.5% | 1.9% |
| space1 | | | |
| Race | | | |
| | Allentown, PA | Bowling Green, KY | United States |
| | 34.4% | 71.3% | 61.5% |
| | 10.4% | 13.6% | 12.3% |
| | 2.1% | 4.9% | 5.3% |
| | 0.2% | 0.1% | 0.7% |
| | 0.0% | 0.4% | 0.2% |
| | 0.2% | 0.1% | 0.2% |
| | 2.1% | 2.7% | 2.3% |
| | 50.6% | 6.9% | 17.6% |
| space2 | | | |
| Marriage & Family | | | |
| | Allentown, PA | Bowling Green, KY | United States |
| | 37.5% | 36.8% | 50.2% |
| | 33.6% | 35.0% | 48.2% |
| | 3.9% | 1.8% | 2.0% |
| | 62.5% | 63.2% | 49.8% |
| | 46.3% | 47.0% | 33.1% |
| | 10.8% | 11.2% | 10.9% |
| | 5.4% | 5.1% | 5.8% |
| space5 | | | |
| | 2.74 | 2.40 | 2.63 |
| | 41,935 | 23,810 | 118,825,921 |
| | 26,951 | 12,919 | 78,298,703 |
| | 23.6% | 28.7% | 31.1% |
| | 27.0% | 36.8% | 42.3% |
| | 14,984 | 10,891 | 40,527,218 |
| | 35.1% | 23.8% | 16.3% |
| | 14.2% | 10.7% | 10.3% |