| | Kentfield, CA | Tiburon, CA | United States |
| Population | 7,517 | 9,146 | 329,725,481 |
| Female Population | 51.0% | 50.5% | 50.5% |
| Male Population | 49.0% | 49.5% | 49.5% |
| Median Age | 45.7 | 49.6 | 38.4 |
| space3 | | | |
| Population - 2010 | 7,044 | 8,956 | 309,327,143 |
| Population - 2000 | 6,351 | 8,666 | 285,036,114 |
| Population - 1990 | 6,030 | 7,532 | 251,960,433 |
| Pop. 2000 to Now | 7.5% | 4.9% | 15.6% |
| Pop. 1990 to Now | 13.3% | 20.6% | 30.8% |
| space4 | | | |
| Population Density | 2,485.0 | 2,041.1 | 93.4 |
| Land Area | 3.0 | 4.5 | 3,531,905.4 |
| Water Area | 0.0 | 8.7 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Kentfield, CA | Tiburon, CA | United States |
| Age 0 to 4 | 5.2% | 3.6% | 5.9% |
| Age 5 to 9 | 6.3% | 4.5% | 6.1% |
| Age 10 to 14 | 10.9% | 7.6% | 6.6% |
| Age 15 to 17 | 3.9% | 5.0% | 3.9% |
| Age 18 to 20 | 3.2% | 2.7% | 4.0% |
| Age 21 to 24 | 2.4% | 3.1% | 5.2% |
| Age 25 to 34 | 5.1% | 3.7% | 13.8% |
| Age 35 to 44 | 11.7% | 12.2% | 12.9% |
| Age 45 to 54 | 17.1% | 18.1% | 12.6% |
| Age 55 to 59 | 5.2% | 9.4% | 6.7% |
| Age 60 to 64 | 7.5% | 6.7% | 6.3% |
| Age 65 to 74 | 9.9% | 12.1% | 9.6% |
| Age 75 to 84 | 7.5% | 8.1% | 4.5% |
| Age 85 and over | 4.1% | 3.2% | 1.9% |
| space1 | | | |
| Race | | | |
| | Kentfield, CA | Tiburon, CA | United States |
| White | 82.7% | 80.0% | 59.4% |
| Black | 0.6% | 0.2% | 12.2% |
| Asian | 5.2% | 7.4% | 5.6% |
| Native American | 0.2% | 0.2% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.1% | 0.4% |
| Two or More Races | 4.4% | 5.2% | 3.2% |
| Hispanic | 7.0% | 6.8% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Kentfield, CA | Tiburon, CA | United States |
| Married Population | 60.3% | 62.6% | 49.8% |
| Currently Married | 59.0% | 62.3% | 48.0% |
| Married but Separated | 1.3% | 0.3% | 1.8% |
| Single Population | 39.7% | 37.4% | 50.2% |
| Never Married | 25.8% | 23.3% | 33.8% |
| Divorced | 8.7% | 8.0% | 10.8% |
| Widowed | 5.2% | 6.1% | 5.6% |
| space5 | | | |
| Household Size | 2.71 | 2.59 | 2.60 |
| Households | 2,761 | 3,515 | 124,010,992 |
| Family Households | 1,953 | 2,622 | 80,755,759 |
| Married couple, w/children | 45.8% | 36.2% | 30.5% |
| Married couple, no children | 40.7% | 52.1% | 42.9% |
| Non Family Households | 808 | 893 | 43,255,233 |
| Single householder, w/children | 5.4% | 7.1% | 15.8% |
| Single householder, no children | 8.1% | 4.6% | 10.8% |