| | Rancho Palos Verdes, CA | Kailua (Honolulu County), HI | United States |
| Population | 42,316 | 40,402 | 329,725,481 |
| Female Population | 51.4% | 50.2% | 50.5% |
| Male Population | 48.6% | 49.8% | 49.5% |
| Median Age | 49.7 | 41.9 | 38.4 |
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| Population - 2010 | 41,685 | 38,541 | 309,327,143 |
| Population - 2000 | 41,145 | 36,513 | 285,036,114 |
| Population - 1990 | 41,659 | 36,818 | 251,960,433 |
| Pop. 2000 to Now | -0.7% | 1.4% | 15.6% |
| Pop. 1990 to Now | -1.9% | 0.5% | 30.8% |
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| Population Density | 3,141.3 | 5,202.4 | 93.4 |
| Land Area | 13.5 | 7.8 | 3,531,905.4 |
| Water Area | 0.0 | 2.8 | 264,836.8 |
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| Est. Total Population By Age | | | |
| | Rancho Palos Verdes, CA | Kailua (Honolulu County), HI | United States |
| Age 0 to 4 | 4.0% | 5.6% | 5.9% |
| Age 5 to 9 | 5.1% | 6.2% | 6.1% |
| Age 10 to 14 | 7.5% | 6.7% | 6.6% |
| Age 15 to 17 | 4.5% | 3.2% | 3.9% |
| Age 18 to 20 | 3.1% | 2.9% | 4.0% |
| Age 21 to 24 | 3.7% | 3.9% | 5.2% |
| Age 25 to 34 | 5.4% | 11.7% | 13.8% |
| Age 35 to 44 | 9.9% | 14.4% | 12.9% |
| Age 45 to 54 | 14.8% | 12.2% | 12.6% |
| Age 55 to 59 | 9.5% | 7.0% | 6.7% |
| Age 60 to 64 | 6.8% | 6.6% | 6.3% |
| Age 65 to 74 | 13.2% | 11.5% | 9.6% |
| Age 75 to 84 | 7.8% | 4.9% | 4.5% |
| Age 85 and over | 4.5% | 3.2% | 1.9% |
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| Race | | | |
| | Rancho Palos Verdes, CA | Kailua (Honolulu County), HI | United States |
| White | 49.3% | 41.4% | 59.4% |
| Black | 1.7% | 0.6% | 12.2% |
| Asian | 30.9% | 19.9% | 5.6% |
| Native American | 0.1% | 0.2% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 4.1% | 0.2% |
| Other | 0.4% | 0.9% | 0.4% |
| Two or More Races | 7.3% | 24.3% | 3.2% |
| Hispanic | 10.4% | 8.7% | 18.4% |
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| Marriage & Family | | | |
| | Rancho Palos Verdes, CA | Kailua (Honolulu County), HI | United States |
| Married Population | 64.8% | 57.1% | 49.8% |
| Currently Married | 63.8% | 56.4% | 48.0% |
| Married but Separated | 1.1% | 0.7% | 1.8% |
| Single Population | 35.2% | 42.9% | 50.2% |
| Never Married | 22.2% | 27.8% | 33.8% |
| Divorced | 6.8% | 8.9% | 10.8% |
| Widowed | 6.1% | 6.2% | 5.6% |
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| Household Size | 2.73 | 3.08 | 2.60 |
| Households | 15,359 | 13,039 | 124,010,992 |
| Family Households | 12,242 | 9,735 | 80,755,759 |
| Married couple, w/children | 34.0% | 32.9% | 30.5% |
| Married couple, no children | 52.7% | 46.4% | 42.9% |
| Non Family Households | 3,117 | 3,304 | 43,255,233 |
| Single householder, w/children | 4.2% | 8.2% | 15.8% |
| Single householder, no children | 9.1% | 12.5% | 10.8% |