| | Keenesburg, CO | Montgomery, WV | United States |
| Population | 1,546 | 1,647 | 329,725,481 |
| Female Population | 42.8% | 56.2% | 50.5% |
| Male Population | 57.3% | 43.8% | 49.5% |
| Median Age | 34 | 39.5 | 38.4 |
| space3 | | | |
| Population - 2010 | 1,133 | 1,638 | 309,327,143 |
| Population - 2000 | 855 | 1,942 | 285,036,114 |
| Population - 1990 | 570 | 2,449 | 251,960,433 |
| Pop. 2000 to Now | 52.3% | -23.2% | 15.6% |
| Pop. 1990 to Now | 128.4% | -39.1% | 30.8% |
| space4 | | | |
| Population Density | 467.4 | 1,049.7 | 93.4 |
| Land Area | 3.3 | 1.6 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Keenesburg, CO | Montgomery, WV | United States |
| Age 0 to 4 | 9.0% | 6.9% | 5.9% |
| Age 5 to 9 | 9.0% | 5.2% | 6.1% |
| Age 10 to 14 | 6.3% | 3.6% | 6.6% |
| Age 15 to 17 | 3.8% | 2.7% | 3.9% |
| Age 18 to 20 | 4.9% | 13.7% | 4.0% |
| Age 21 to 24 | 5.4% | 8.5% | 5.2% |
| Age 25 to 34 | 11.8% | 7.8% | 13.8% |
| Age 35 to 44 | 20.1% | 10.8% | 12.9% |
| Age 45 to 54 | 8.9% | 10.4% | 12.6% |
| Age 55 to 59 | 4.5% | 5.4% | 6.7% |
| Age 60 to 64 | 4.9% | 7.5% | 6.3% |
| Age 65 to 74 | 5.6% | 10.3% | 9.6% |
| Age 75 to 84 | 3.8% | 4.8% | 4.5% |
| Age 85 and over | 1.9% | 2.6% | 1.9% |
| space1 | | | |
| Race | | | |
| | Keenesburg, CO | Montgomery, WV | United States |
| White | 63.3% | 77.0% | 59.4% |
| Black | 0.2% | 5.3% | 12.2% |
| Asian | 0.0% | 0.0% | 5.6% |
| Native American | 0.3% | 0.1% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 1.7% | 13.8% | 3.2% |
| Hispanic | 34.4% | 3.8% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Keenesburg, CO | Montgomery, WV | United States |
| Married Population | 51.3% | 22.3% | 49.8% |
| Currently Married | 51.3% | 19.4% | 48.0% |
| Married but Separated | 0.0% | 2.9% | 1.8% |
| Single Population | 48.7% | 77.7% | 50.2% |
| Never Married | 29.1% | 42.7% | 33.8% |
| Divorced | 16.6% | 21.6% | 10.8% |
| Widowed | 3.0% | 13.4% | 5.6% |
| space5 | | | |
| Household Size | 3.36 | 2.20 | 2.60 |
| Households | 453 | 633 | 124,010,992 |
| Family Households | 358 | 261 | 80,755,759 |
| Married couple, w/children | 39.7% | 9.6% | 30.5% |
| Married couple, no children | 36.6% | 37.9% | 42.9% |
| Non Family Households | 95 | 372 | 43,255,233 |
| Single householder, w/children | 19.8% | 37.9% | 15.8% |
| Single householder, no children | 3.9% | 14.6% | 10.8% |