| | Finley, ND | Mullan, ID | United States |
| Population | 354 | 739 | 329,725,481 |
| Female Population | 38.4% | 56.6% | 50.5% |
| Male Population | 61.6% | 43.4% | 49.5% |
| Median Age | 50.5 | 40.2 | 38.4 |
| space3 | | | |
| Population - 2010 | 450 | 689 | 309,327,143 |
| Population - 2000 | 515 | 840 | 285,036,114 |
| Population - 1990 | 543 | 821 | 251,960,433 |
| Pop. 2000 to Now | -19.8% | -17.7% | 15.6% |
| Pop. 1990 to Now | -23.9% | -15.8% | 30.8% |
| space4 | | | |
| Population Density | 101.5 | 893.6 | 93.4 |
| Land Area | 3.5 | 0.8 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Finley, ND | Mullan, ID | United States |
| Age 0 to 4 | 5.1% | 8.4% | 5.9% |
| Age 5 to 9 | 2.5% | 7.2% | 6.1% |
| Age 10 to 14 | 5.1% | 6.0% | 6.6% |
| Age 15 to 17 | 6.8% | 5.3% | 3.9% |
| Age 18 to 20 | 0.6% | 1.2% | 4.0% |
| Age 21 to 24 | 6.2% | 3.2% | 5.2% |
| Age 25 to 34 | 5.7% | 9.7% | 13.8% |
| Age 35 to 44 | 4.8% | 13.9% | 12.9% |
| Age 45 to 54 | 23.7% | 13.8% | 12.6% |
| Age 55 to 59 | 5.4% | 2.7% | 6.7% |
| Age 60 to 64 | 4.2% | 5.1% | 6.3% |
| Age 65 to 74 | 7.3% | 13.7% | 9.6% |
| Age 75 to 84 | 18.6% | 7.7% | 4.5% |
| Age 85 and over | 4.0% | 2.0% | 1.9% |
| space1 | | | |
| Race | | | |
| | Finley, ND | Mullan, ID | United States |
| White | 94.9% | 88.6% | 59.4% |
| Black | 0.0% | 0.3% | 12.2% |
| Asian | 0.0% | 0.0% | 5.6% |
| Native American | 0.0% | 0.4% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 4.5% | 3.9% | 3.2% |
| Hispanic | 0.6% | 6.8% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Finley, ND | Mullan, ID | United States |
| Married Population | 60.5% | 55.2% | 49.8% |
| Currently Married | 59.9% | 55.2% | 48.0% |
| Married but Separated | 0.6% | 0.0% | 1.8% |
| Single Population | 39.5% | 44.8% | 50.2% |
| Never Married | 21.4% | 26.7% | 33.8% |
| Divorced | 13.9% | 8.6% | 10.8% |
| Widowed | 4.2% | 9.5% | 5.6% |
| space5 | | | |
| Household Size | 2.13 | 2.30 | 2.60 |
| Households | 166 | 322 | 124,010,992 |
| Family Households | 109 | 193 | 80,755,759 |
| Married couple, w/children | 25.7% | 32.1% | 30.5% |
| Married couple, no children | 59.6% | 52.3% | 42.9% |
| Non Family Households | 57 | 129 | 43,255,233 |
| Single householder, w/children | 14.7% | 14.5% | 15.8% |
| Single householder, no children | 0.0% | 1.0% | 10.8% |