| | Diamond Springs, CA | Auburn, CA | United States |
| Population | 11,545 | 13,738 | 329,725,481 |
| Female Population | 50.0% | 53.4% | 50.5% |
| Male Population | 50.0% | 46.6% | 49.5% |
| Median Age | 47.1 | 48.2 | 38.4 |
| space3 | | | |
| Population - 2010 | 11,327 | 13,349 | 309,327,143 |
| Population - 2000 | 4,888 | 12,462 | 285,036,114 |
| Population - 1990 | 2,872 | 10,592 | 251,960,433 |
| Pop. 2000 to Now | 150.5% | 14.0% | 15.6% |
| Pop. 1990 to Now | 326.3% | 34.1% | 30.8% |
| space4 | | | |
| Population Density | 693.8 | 1,914.2 | 93.4 |
| Land Area | 16.6 | 7.2 | 3,531,905.4 |
| Water Area | 0.1 | 0.0 | 264,836.8 |
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| Est. Total Population By Age | | | |
| | Diamond Springs, CA | Auburn, CA | United States |
| Age 0 to 4 | 5.3% | 3.3% | 5.9% |
| Age 5 to 9 | 3.7% | 6.6% | 6.1% |
| Age 10 to 14 | 8.7% | 4.0% | 6.6% |
| Age 15 to 17 | 2.6% | 3.4% | 3.9% |
| Age 18 to 20 | 2.2% | 3.1% | 4.0% |
| Age 21 to 24 | 1.9% | 4.0% | 5.2% |
| Age 25 to 34 | 11.0% | 8.6% | 13.8% |
| Age 35 to 44 | 13.9% | 12.5% | 12.9% |
| Age 45 to 54 | 10.2% | 12.7% | 12.6% |
| Age 55 to 59 | 6.3% | 8.3% | 6.7% |
| Age 60 to 64 | 8.7% | 9.4% | 6.3% |
| Age 65 to 74 | 13.7% | 14.3% | 9.6% |
| Age 75 to 84 | 9.1% | 8.0% | 4.5% |
| Age 85 and over | 2.9% | 1.8% | 1.9% |
| space1 | | | |
| Race | | | |
| | Diamond Springs, CA | Auburn, CA | United States |
| White | 75.2% | 80.6% | 59.4% |
| Black | 0.0% | 0.5% | 12.2% |
| Asian | 3.6% | 1.6% | 5.6% |
| Native American | 0.6% | 0.2% | 0.6% |
| Hawaiian, Pacific Islander | 0.1% | 0.5% | 0.2% |
| Other | 0.0% | 0.3% | 0.4% |
| Two or More Races | 2.3% | 3.6% | 3.2% |
| Hispanic | 18.2% | 12.6% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Diamond Springs, CA | Auburn, CA | United States |
| Married Population | 57.0% | 52.6% | 49.8% |
| Currently Married | 56.7% | 50.3% | 48.0% |
| Married but Separated | 0.3% | 2.4% | 1.8% |
| Single Population | 43.0% | 47.4% | 50.2% |
| Never Married | 24.8% | 25.6% | 33.8% |
| Divorced | 10.6% | 16.2% | 10.8% |
| Widowed | 7.6% | 5.5% | 5.6% |
| space5 | | | |
| Household Size | 2.34 | 2.15 | 2.60 |
| Households | 4,887 | 6,236 | 124,010,992 |
| Family Households | 3,117 | 3,621 | 80,755,759 |
| Married couple, w/children | 31.1% | 21.6% | 30.5% |
| Married couple, no children | 54.3% | 54.7% | 42.9% |
| Non Family Households | 1,770 | 2,615 | 43,255,233 |
| Single householder, w/children | 5.9% | 12.1% | 15.8% |
| Single householder, no children | 8.6% | 11.6% | 10.8% |