| | Placerville, ID | Parma, ID | United States |
| Population | 56 | 1,776 | 329,725,481 |
| Female Population | 39.3% | 51.4% | 50.5% |
| Male Population | 60.7% | 48.7% | 49.5% |
| Median Age | 64.3 | 39.5 | 38.4 |
| space3 | | | |
| Population - 2010 | 53 | 1,976 | 309,327,143 |
| Population - 2000 | 60 | 1,771 | 285,036,114 |
| Population - 1990 | 14 | 1,597 | 251,960,433 |
| Pop. 2000 to Now | -3.3% | 20.2% | 15.6% |
| Pop. 1990 to Now | 314.3% | 33.3% | 30.8% |
| space4 | | | |
| Population Density | 56.0 | 1,642.9 | 93.4 |
| Land Area | 1.0 | 1.1 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Placerville, ID | Parma, ID | United States |
| Age 0 to 4 | 3.6% | 6.6% | 5.9% |
| Age 5 to 9 | 3.6% | 7.9% | 6.1% |
| Age 10 to 14 | 1.8% | 9.8% | 6.6% |
| Age 15 to 17 | 0.0% | 2.2% | 3.9% |
| Age 18 to 20 | 0.0% | 2.8% | 4.0% |
| Age 21 to 24 | 0.0% | 3.5% | 5.2% |
| Age 25 to 34 | 12.5% | 12.1% | 13.8% |
| Age 35 to 44 | 8.9% | 11.6% | 12.9% |
| Age 45 to 54 | 0.0% | 15.4% | 12.6% |
| Age 55 to 59 | 14.3% | 2.3% | 6.7% |
| Age 60 to 64 | 10.7% | 5.8% | 6.3% |
| Age 65 to 74 | 28.6% | 12.2% | 9.6% |
| Age 75 to 84 | 16.1% | 6.3% | 4.5% |
| Age 85 and over | 0.0% | 1.6% | 1.9% |
| space1 | | | |
| Race | | | |
| | Placerville, ID | Parma, ID | United States |
| White | 87.5% | 74.2% | 59.4% |
| Black | 0.0% | 0.0% | 12.2% |
| Asian | 0.0% | 1.6% | 5.6% |
| Native American | 0.0% | 0.5% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 0.0% | 1.1% | 3.2% |
| Hispanic | 12.5% | 22.6% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Placerville, ID | Parma, ID | United States |
| Married Population | 82.4% | 54.7% | 49.8% |
| Currently Married | 82.4% | 53.5% | 48.0% |
| Married but Separated | 0.0% | 1.2% | 1.8% |
| Single Population | 17.6% | 45.3% | 50.2% |
| Never Married | 0.0% | 22.5% | 33.8% |
| Divorced | 17.6% | 17.6% | 10.8% |
| Widowed | 0.0% | 5.1% | 5.6% |
| space5 | | | |
| Household Size | 1.81 | 2.58 | 2.60 |
| Households | 31 | 680 | 124,010,992 |
| Family Households | 22 | 459 | 80,755,759 |
| Married couple, w/children | 13.6% | 32.7% | 30.5% |
| Married couple, no children | 86.4% | 41.2% | 42.9% |
| Non Family Households | 9 | 221 | 43,255,233 |
| Single householder, w/children | 0.0% | 19.2% | 15.8% |
| Single householder, no children | 0.0% | 7.0% | 10.8% |