| | Moss Beach, CA | Montara, CA | United States |
| Population | 3,227 | 2,879 | 329,725,481 |
| Female Population | 48.7% | 53.4% | 50.5% |
| Male Population | 51.4% | 46.6% | 49.5% |
| Median Age | 43.3 | 55.4 | 38.4 |
| space3 | | | |
| Population - 2010 | 2,291 | 3,085 | 309,327,143 |
| Population - 2000 | 1,953 | 2,950 | 285,036,114 |
| Population - 1990 | 3,002 | 2,552 | 251,960,433 |
| Pop. 2000 to Now | 98.6% | -2.3% | 15.6% |
| Pop. 1990 to Now | 29.2% | 12.9% | 30.8% |
| space4 | | | |
| Population Density | 1,438.1 | 742.4 | 93.4 |
| Land Area | 2.2 | 3.9 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Moss Beach, CA | Montara, CA | United States |
| Age 0 to 4 | 12.2% | 3.3% | 5.9% |
| Age 5 to 9 | 3.3% | 4.1% | 6.1% |
| Age 10 to 14 | 3.4% | 2.2% | 6.6% |
| Age 15 to 17 | 9.9% | 0.0% | 3.9% |
| Age 18 to 20 | 0.0% | 8.3% | 4.0% |
| Age 21 to 24 | 0.7% | 8.0% | 5.2% |
| Age 25 to 34 | 6.4% | 2.6% | 13.8% |
| Age 35 to 44 | 16.2% | 15.6% | 12.9% |
| Age 45 to 54 | 19.9% | 5.3% | 12.6% |
| Age 55 to 59 | 4.4% | 15.0% | 6.7% |
| Age 60 to 64 | 6.1% | 2.7% | 6.3% |
| Age 65 to 74 | 11.5% | 30.6% | 9.6% |
| Age 75 to 84 | 3.4% | 2.2% | 4.5% |
| Age 85 and over | 2.6% | 0.0% | 1.9% |
| space1 | | | |
| Race | | | |
| | Moss Beach, CA | Montara, CA | United States |
| White | 54.1% | 86.7% | 59.4% |
| Black | 0.5% | 0.0% | 12.2% |
| Asian | 5.0% | 0.7% | 5.6% |
| Native American | 0.6% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 9.3% | 4.9% | 3.2% |
| Hispanic | 30.6% | 7.7% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Moss Beach, CA | Montara, CA | United States |
| Married Population | 55.4% | 62.8% | 49.8% |
| Currently Married | 52.7% | 61.6% | 48.0% |
| Married but Separated | 2.7% | 1.2% | 1.8% |
| Single Population | 44.6% | 37.2% | 50.2% |
| Never Married | 31.7% | 30.6% | 33.8% |
| Divorced | 5.4% | 5.4% | 10.8% |
| Widowed | 7.5% | 1.3% | 5.6% |
| space5 | | | |
| Household Size | 2.80 | 2.77 | 2.60 |
| Households | 1,109 | 1,040 | 124,010,992 |
| Family Households | 817 | 830 | 80,755,759 |
| Married couple, w/children | 49.8% | 14.0% | 30.5% |
| Married couple, no children | 31.0% | 82.2% | 42.9% |
| Non Family Households | 292 | 210 | 43,255,233 |
| Single householder, w/children | 14.1% | 0.0% | 15.8% |
| Single householder, no children | 5.1% | 3.9% | 10.8% |