| | Philipsburg, MT | Charles City, IA | United States |
| Population | 1,025 | 7,399 | 329,725,481 |
| Female Population | 46.8% | 53.4% | 50.5% |
| Male Population | 53.2% | 46.6% | 49.5% |
| Median Age | 46.8 | 41.5 | 38.4 |
| space3 | | | |
| Population - 2010 | 844 | 7,659 | 309,327,143 |
| Population - 2000 | 914 | 7,812 | 285,036,114 |
| Population - 1990 | 925 | 7,878 | 251,960,433 |
| Pop. 2000 to Now | -0.9% | -7.6% | 15.6% |
| Pop. 1990 to Now | -2.1% | -8.4% | 30.8% |
| space4 | | | |
| Population Density | 1,205.9 | 1,190.3 | 93.4 |
| Land Area | 0.9 | 6.2 | 3,531,905.4 |
| Water Area | 0.0 | 0.1 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Philipsburg, MT | Charles City, IA | United States |
| Age 0 to 4 | 9.8% | 6.1% | 5.9% |
| Age 5 to 9 | 1.1% | 3.3% | 6.1% |
| Age 10 to 14 | 5.9% | 9.4% | 6.6% |
| Age 15 to 17 | 2.6% | 3.7% | 3.9% |
| Age 18 to 20 | 9.7% | 2.9% | 4.0% |
| Age 21 to 24 | 0.1% | 5.4% | 5.2% |
| Age 25 to 34 | 3.3% | 9.8% | 13.8% |
| Age 35 to 44 | 13.0% | 12.2% | 12.9% |
| Age 45 to 54 | 11.1% | 12.6% | 12.6% |
| Age 55 to 59 | 12.4% | 4.4% | 6.7% |
| Age 60 to 64 | 3.5% | 5.3% | 6.3% |
| Age 65 to 74 | 17.8% | 12.4% | 9.6% |
| Age 75 to 84 | 7.4% | 6.9% | 4.5% |
| Age 85 and over | 2.4% | 5.7% | 1.9% |
| space1 | | | |
| Race | | | |
| | Philipsburg, MT | Charles City, IA | United States |
| White | 87.6% | 84.3% | 59.4% |
| Black | 0.0% | 2.7% | 12.2% |
| Asian | 0.0% | 2.4% | 5.6% |
| Native American | 0.8% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.7% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 0.4% | 2.9% | 3.2% |
| Hispanic | 11.2% | 7.0% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Philipsburg, MT | Charles City, IA | United States |
| Married Population | 37.9% | 51.7% | 49.8% |
| Currently Married | 37.9% | 51.0% | 48.0% |
| Married but Separated | 0.0% | 0.7% | 1.8% |
| Single Population | 62.1% | 48.3% | 50.2% |
| Never Married | 35.5% | 26.9% | 33.8% |
| Divorced | 18.5% | 12.6% | 10.8% |
| Widowed | 8.1% | 8.7% | 5.6% |
| space5 | | | |
| Household Size | 2.66 | 2.11 | 2.60 |
| Households | 374 | 3,409 | 124,010,992 |
| Family Households | 171 | 1,775 | 80,755,759 |
| Married couple, w/children | 24.0% | 29.2% | 30.5% |
| Married couple, no children | 62.6% | 42.6% | 42.9% |
| Non Family Households | 203 | 1,634 | 43,255,233 |
| Single householder, w/children | 0.0% | 15.3% | 15.8% |
| Single householder, no children | 13.5% | 12.9% | 10.8% |