| | Kingsford, MI | Iron River, MI | United States |
| Population | 5,159 | 2,989 | 329,725,481 |
| Female Population | 54.3% | 55.1% | 50.5% |
| Male Population | 45.8% | 44.9% | 49.5% |
| Median Age | 40.3 | 42.7 | 38.4 |
| space3 | | | |
| Population - 2010 | 5,130 | 3,030 | 309,327,143 |
| Population - 2000 | 5,549 | 1,929 | 285,036,114 |
| Population - 1990 | 5,480 | 2,095 | 251,960,433 |
| Pop. 2000 to Now | -11.3% | 46.6% | 15.6% |
| Pop. 1990 to Now | -10.2% | 34.9% | 30.8% |
| space4 | | | |
| Population Density | 1,191.2 | 443.7 | 93.4 |
| Land Area | 4.3 | 6.7 | 3,531,905.4 |
| Water Area | 0.3 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Kingsford, MI | Iron River, MI | United States |
| Age 0 to 4 | 7.2% | 7.9% | 5.9% |
| Age 5 to 9 | 5.6% | 6.8% | 6.1% |
| Age 10 to 14 | 7.9% | 4.1% | 6.6% |
| Age 15 to 17 | 4.9% | 2.8% | 3.9% |
| Age 18 to 20 | 2.3% | 1.0% | 4.0% |
| Age 21 to 24 | 7.4% | 9.5% | 5.2% |
| Age 25 to 34 | 6.9% | 9.2% | 13.8% |
| Age 35 to 44 | 15.5% | 10.2% | 12.9% |
| Age 45 to 54 | 9.2% | 8.7% | 12.6% |
| Age 55 to 59 | 5.6% | 9.5% | 6.7% |
| Age 60 to 64 | 5.3% | 10.5% | 6.3% |
| Age 65 to 74 | 9.8% | 11.3% | 9.6% |
| Age 75 to 84 | 7.8% | 5.1% | 4.5% |
| Age 85 and over | 4.6% | 3.4% | 1.9% |
| space1 | | | |
| Race | | | |
| | Kingsford, MI | Iron River, MI | United States |
| White | 88.4% | 93.5% | 59.4% |
| Black | 1.1% | 0.9% | 12.2% |
| Asian | 1.3% | 0.0% | 5.6% |
| Native American | 1.7% | 1.6% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.3% | 0.0% | 0.4% |
| Two or More Races | 5.0% | 0.7% | 3.2% |
| Hispanic | 2.2% | 3.3% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Kingsford, MI | Iron River, MI | United States |
| Married Population | 47.5% | 39.9% | 49.8% |
| Currently Married | 46.9% | 39.7% | 48.0% |
| Married but Separated | 0.7% | 0.2% | 1.8% |
| Single Population | 52.5% | 60.1% | 50.2% |
| Never Married | 29.9% | 34.9% | 33.8% |
| Divorced | 12.8% | 18.2% | 10.8% |
| Widowed | 9.7% | 7.1% | 5.6% |
| space5 | | | |
| Household Size | 2.28 | 2.33 | 2.60 |
| Households | 2,206 | 1,245 | 124,010,992 |
| Family Households | 1,360 | 710 | 80,755,759 |
| Married couple, w/children | 24.5% | 11.4% | 30.5% |
| Married couple, no children | 44.3% | 53.5% | 42.9% |
| Non Family Households | 846 | 535 | 43,255,233 |
| Single householder, w/children | 20.8% | 26.6% | 15.8% |
| Single householder, no children | 10.4% | 8.5% | 10.8% |