| Statistic | Waipahu | Honolulu | Hawaii |
| Population | 71,494 | 349,597 | 1,413,673 |
| Population density (sq mi) | 3,503 | 5,774 | 127 |
| Median age | 37.1 | 40.9 | 38.5 |
| Male/Female ratio | 1.0:1 | 1.0:1 | 1.0:1 |
| Married (15yrs & older) | n/a | 53% | 57% |
| Speak English | n/a | 63% | 74% |
| Speak Spanish | n/a | 1% | 2% |
| Race | Waipahu | Honolulu | Hawaii |
| Caucasian | 7.75% | 18.02% | 25.02% |
| African American | 1.58% | 1.72% | 1.83% |
| Asian | 61.69% | 53.84% | 38.01% |
| American Indian | 0.05% | 0.11% | 0.19% |
| Native Hawaiian | 11.26% | 8.46% | 10.18% |
| Mixed race | 17.12% | 17.03% | 23.81% |
| Other race | 0.54% | 0.82% | 0.95% |