| | Waterford, CA | Newman, CA | United States |
| Population | 9,100 | 12,154 | 329,725,481 |
| Female Population | 47.5% | 53.7% | 50.5% |
| Male Population | 52.5% | 46.3% | 49.5% |
| Median Age | 31.8 | 33.8 | 38.4 |
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| Population - 2010 | 8,473 | 10,351 | 309,327,143 |
| Population - 2000 | 6,924 | 7,093 | 285,036,114 |
| Population - 1990 | 4,771 | 4,151 | 251,960,433 |
| Pop. 2000 to Now | 29.2% | 65.0% | 15.6% |
| Pop. 1990 to Now | 87.5% | 181.9% | 30.8% |
| space4 | | | |
| Population Density | 3,859.2 | 5,894.3 | 93.4 |
| Land Area | 2.4 | 2.1 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
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| Est. Total Population By Age | | | |
| | Waterford, CA | Newman, CA | United States |
| Age 0 to 4 | 6.9% | 9.8% | 5.9% |
| Age 5 to 9 | 6.4% | 8.6% | 6.1% |
| Age 10 to 14 | 10.4% | 7.8% | 6.6% |
| Age 15 to 17 | 4.8% | 2.5% | 3.9% |
| Age 18 to 20 | 5.0% | 5.3% | 4.0% |
| Age 21 to 24 | 4.4% | 3.0% | 5.2% |
| Age 25 to 34 | 15.7% | 16.1% | 13.8% |
| Age 35 to 44 | 11.7% | 12.5% | 12.9% |
| Age 45 to 54 | 11.5% | 10.4% | 12.6% |
| Age 55 to 59 | 7.9% | 8.9% | 6.7% |
| Age 60 to 64 | 5.1% | 4.9% | 6.3% |
| Age 65 to 74 | 6.6% | 7.7% | 9.6% |
| Age 75 to 84 | 3.2% | 1.6% | 4.5% |
| Age 85 and over | 0.5% | 0.9% | 1.9% |
| space1 | | | |
| Race | | | |
| | Waterford, CA | Newman, CA | United States |
| White | 42.8% | 23.7% | 59.4% |
| Black | 2.5% | 0.2% | 12.2% |
| Asian | 3.9% | 4.2% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.1% | 0.4% |
| Two or More Races | 1.9% | 0.2% | 3.2% |
| Hispanic | 49.0% | 71.5% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Waterford, CA | Newman, CA | United States |
| Married Population | 57.5% | 54.9% | 49.8% |
| Currently Married | 51.1% | 54.3% | 48.0% |
| Married but Separated | 6.3% | 0.6% | 1.8% |
| Single Population | 42.5% | 45.1% | 50.2% |
| Never Married | 33.6% | 34.2% | 33.8% |
| Divorced | 7.0% | 8.4% | 10.8% |
| Widowed | 1.9% | 2.5% | 5.6% |
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| Household Size | 3.78 | 3.45 | 2.60 |
| Households | 2,405 | 3,510 | 124,010,992 |
| Family Households | 2,089 | 2,968 | 80,755,759 |
| Married couple, w/children | 38.0% | 39.1% | 30.5% |
| Married couple, no children | 33.1% | 34.2% | 42.9% |
| Non Family Households | 316 | 542 | 43,255,233 |
| Single householder, w/children | 14.6% | 14.9% | 15.8% |
| Single householder, no children | 14.3% | 11.8% | 10.8% |