| | Philip, SD | Culbertson, MT | United States |
| Population | 600 | 599 | 329,725,481 |
| Female Population | 63.7% | 43.2% | 50.5% |
| Male Population | 36.3% | 56.8% | 49.5% |
| Median Age | 58 | 53 | 38.4 |
| space3 | | | |
| Population - 2010 | 778 | 728 | 309,327,143 |
| Population - 2000 | 885 | 716 | 285,036,114 |
| Population - 1990 | 1,077 | 796 | 251,960,433 |
| Pop. 2000 to Now | -14.9% | 10.2% | 15.6% |
| Pop. 1990 to Now | -30.1% | -0.9% | 30.8% |
| space4 | | | |
| Population Density | 1,010.1 | 585.0 | 93.4 |
| Land Area | 0.6 | 1.0 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Philip, SD | Culbertson, MT | United States |
| Age 0 to 4 | 6.0% | 2.0% | 5.9% |
| Age 5 to 9 | 3.3% | 4.5% | 6.1% |
| Age 10 to 14 | 3.0% | 8.7% | 6.6% |
| Age 15 to 17 | 2.8% | 4.0% | 3.9% |
| Age 18 to 20 | 1.3% | 0.0% | 4.0% |
| Age 21 to 24 | 3.8% | 0.7% | 5.2% |
| Age 25 to 34 | 7.2% | 11.5% | 13.8% |
| Age 35 to 44 | 7.5% | 12.0% | 12.9% |
| Age 45 to 54 | 12.0% | 14.2% | 12.6% |
| Age 55 to 59 | 12.2% | 7.0% | 6.7% |
| Age 60 to 64 | 10.8% | 11.0% | 6.3% |
| Age 65 to 74 | 9.3% | 12.2% | 9.6% |
| Age 75 to 84 | 3.8% | 8.3% | 4.5% |
| Age 85 and over | 16.8% | 3.8% | 1.9% |
| space1 | | | |
| Race | | | |
| | Philip, SD | Culbertson, MT | United States |
| White | 89.3% | 90.7% | 59.4% |
| Black | 0.2% | 0.8% | 12.2% |
| Asian | 0.0% | 0.0% | 5.6% |
| Native American | 10.3% | 4.3% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 0.0% | 3.0% | 3.2% |
| Hispanic | 0.2% | 1.2% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Philip, SD | Culbertson, MT | United States |
| Married Population | 51.9% | 64.0% | 49.8% |
| Currently Married | 51.9% | 62.2% | 48.0% |
| Married but Separated | 0.0% | 1.8% | 1.8% |
| Single Population | 48.1% | 36.0% | 50.2% |
| Never Married | 13.1% | 17.5% | 33.8% |
| Divorced | 14.1% | 10.6% | 10.8% |
| Widowed | 20.9% | 7.9% | 5.6% |
| space5 | | | |
| Household Size | 2.03 | 2.45 | 2.60 |
| Households | 279 | 237 | 124,010,992 |
| Family Households | 148 | 143 | 80,755,759 |
| Married couple, w/children | 22.3% | 21.7% | 30.5% |
| Married couple, no children | 65.5% | 71.3% | 42.9% |
| Non Family Households | 131 | 94 | 43,255,233 |
| Single householder, w/children | 8.1% | 2.8% | 15.8% |
| Single householder, no children | 4.1% | 4.2% | 10.8% |