| | Aloha, OR | San Carlos, CA | United States |
| Population | 52,704 | 30,754 | 329,725,481 |
| Female Population | 49.2% | 51.1% | 50.5% |
| Male Population | 50.8% | 48.9% | 49.5% |
| Median Age | 35.8 | 41 | 38.4 |
| space3 | | | |
| Population - 2010 | 47,574 | 28,300 | 309,327,143 |
| Population - 2000 | 41,741 | 27,718 | 285,036,114 |
| Population - 1990 | 34,284 | 26,167 | 251,960,433 |
| Pop. 2000 to Now | 39.3% | 6.9% | 15.6% |
| Pop. 1990 to Now | 69.6% | 13.3% | 30.8% |
| space4 | | | |
| Population Density | 7,170.6 | 5,578.5 | 93.4 |
| Land Area | 7.4 | 5.5 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Aloha, OR | San Carlos, CA | United States |
| Age 0 to 4 | 5.4% | 5.4% | 5.9% |
| Age 5 to 9 | 5.3% | 7.2% | 6.1% |
| Age 10 to 14 | 7.1% | 7.0% | 6.6% |
| Age 15 to 17 | 4.7% | 4.0% | 3.9% |
| Age 18 to 20 | 3.6% | 1.3% | 4.0% |
| Age 21 to 24 | 6.1% | 3.8% | 5.2% |
| Age 25 to 34 | 16.4% | 10.7% | 13.8% |
| Age 35 to 44 | 15.3% | 15.6% | 12.9% |
| Age 45 to 54 | 13.6% | 15.1% | 12.6% |
| Age 55 to 59 | 4.8% | 8.8% | 6.7% |
| Age 60 to 64 | 6.7% | 5.8% | 6.3% |
| Age 65 to 74 | 7.5% | 8.7% | 9.6% |
| Age 75 to 84 | 2.5% | 4.4% | 4.5% |
| Age 85 and over | 1.0% | 2.1% | 1.9% |
| space1 | | | |
| Race | | | |
| | Aloha, OR | San Carlos, CA | United States |
| White | 54.9% | 63.2% | 59.4% |
| Black | 4.3% | 0.7% | 12.2% |
| Asian | 9.8% | 18.2% | 5.6% |
| Native American | 0.3% | 0.1% | 0.6% |
| Hawaiian, Pacific Islander | 0.2% | 0.4% | 0.2% |
| Other | 0.4% | 1.0% | 0.4% |
| Two or More Races | 6.2% | 6.9% | 3.2% |
| Hispanic | 24.0% | 9.5% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Aloha, OR | San Carlos, CA | United States |
| Married Population | 50.9% | 61.0% | 49.8% |
| Currently Married | 49.9% | 60.0% | 48.0% |
| Married but Separated | 1.0% | 1.0% | 1.8% |
| Single Population | 49.1% | 39.0% | 50.2% |
| Never Married | 33.6% | 25.3% | 33.8% |
| Divorced | 11.4% | 9.2% | 10.8% |
| Widowed | 4.0% | 4.6% | 5.6% |
| space5 | | | |
| Household Size | 2.86 | 2.69 | 2.60 |
| Households | 18,258 | 11,393 | 124,010,992 |
| Family Households | 12,837 | 8,214 | 80,755,759 |
| Married couple, w/children | 34.2% | 43.2% | 30.5% |
| Married couple, no children | 41.3% | 42.9% | 42.9% |
| Non Family Households | 5,421 | 3,179 | 43,255,233 |
| Single householder, w/children | 15.4% | 7.6% | 15.8% |
| Single householder, no children | 9.1% | 6.3% | 10.8% |