| | Princeville, HI | Poipu, HI | United States |
| Population | 1,969 | 1,008 | 329,725,481 |
| Female Population | 56.4% | 49.1% | 50.5% |
| Male Population | 43.6% | 50.9% | 49.5% |
| Median Age | 50 | 61.9 | 38.4 |
| space3 | | | |
| Population - 2010 | 2,066 | 854 | 309,327,143 |
| Population - 2000 | 1,698 | 1,075 | 285,036,114 |
| Population - 1990 | 1,244 | 975 | 251,960,433 |
| Pop. 2000 to Now | 15.8% | 0.5% | 15.6% |
| Pop. 1990 to Now | 58.1% | 10.8% | 30.8% |
| space4 | | | |
| Population Density | 815.7 | 392.5 | 93.4 |
| Land Area | 2.4 | 2.6 | 3,531,905.4 |
| Water Area | 0.0 | 0.3 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Princeville, HI | Poipu, HI | United States |
| Age 0 to 4 | 3.7% | 2.1% | 5.9% |
| Age 5 to 9 | 8.0% | 2.7% | 6.1% |
| Age 10 to 14 | 4.0% | 4.7% | 6.6% |
| Age 15 to 17 | 8.0% | 2.5% | 3.9% |
| Age 18 to 20 | 0.9% | 0.5% | 4.0% |
| Age 21 to 24 | 0.0% | 3.7% | 5.2% |
| Age 25 to 34 | 2.7% | 5.6% | 13.8% |
| Age 35 to 44 | 16.5% | 5.4% | 12.9% |
| Age 45 to 54 | 16.0% | 9.0% | 12.6% |
| Age 55 to 59 | 4.9% | 10.3% | 6.7% |
| Age 60 to 64 | 7.1% | 11.9% | 6.3% |
| Age 65 to 74 | 21.4% | 31.0% | 9.6% |
| Age 75 to 84 | 6.5% | 7.9% | 4.5% |
| Age 85 and over | 0.5% | 2.9% | 1.9% |
| space1 | | | |
| Race | | | |
| | Princeville, HI | Poipu, HI | United States |
| White | 68.1% | 64.2% | 59.4% |
| Black | 0.0% | 0.2% | 12.2% |
| Asian | 3.9% | 13.3% | 5.6% |
| Native American | 0.0% | 0.3% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 1.8% | 0.2% |
| Other | 0.3% | 0.0% | 0.4% |
| Two or More Races | 8.5% | 5.7% | 3.2% |
| Hispanic | 19.4% | 14.6% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Princeville, HI | Poipu, HI | United States |
| Married Population | 66.4% | 65.3% | 49.8% |
| Currently Married | 65.3% | 65.3% | 48.0% |
| Married but Separated | 1.1% | 0.0% | 1.8% |
| Single Population | 33.6% | 34.7% | 50.2% |
| Never Married | 14.4% | 20.4% | 33.8% |
| Divorced | 16.4% | 9.3% | 10.8% |
| Widowed | 2.8% | 5.0% | 5.6% |
| space5 | | | |
| Household Size | 2.25 | 2.04 | 2.60 |
| Households | 875 | 494 | 124,010,992 |
| Family Households | 593 | 298 | 80,755,759 |
| Married couple, w/children | 30.9% | 14.8% | 30.5% |
| Married couple, no children | 60.9% | 81.5% | 42.9% |
| Non Family Households | 282 | 196 | 43,255,233 |
| Single householder, w/children | 4.4% | 2.3% | 15.8% |
| Single householder, no children | 3.9% | 1.3% | 10.8% |