| | Kirk, CO | Joes, CO | United States |
| Population | 79 | 72 | 329,725,481 |
| Female Population | 40.5% | 44.4% | 50.5% |
| Male Population | 59.5% | 55.6% | 49.5% |
| Median Age | 60.8 | 54.5 | 38.4 |
| space3 | | | |
| Population - 2010 | 136 | 97 | 309,327,143 |
| Population - 2000 | 49 | 59 | 285,036,114 |
| Population - 1990 | 47 | 56 | 251,960,433 |
| Pop. 2000 to Now | 51.0% | -5.1% | 15.6% |
| Pop. 1990 to Now | 57.5% | 0.0% | 30.8% |
| space4 | | | |
| Population Density | 19.3 | 34.5 | 93.4 |
| Land Area | 4.1 | 2.1 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Kirk, CO | Joes, CO | United States |
| Age 0 to 4 | 3.8% | 5.6% | 5.9% |
| Age 5 to 9 | 0.0% | 5.6% | 6.1% |
| Age 10 to 14 | 0.0% | 5.6% | 6.6% |
| Age 15 to 17 | 2.5% | 0.0% | 3.9% |
| Age 18 to 20 | 0.0% | 4.2% | 4.0% |
| Age 21 to 24 | 5.1% | 0.0% | 5.2% |
| Age 25 to 34 | 2.5% | 8.3% | 13.8% |
| Age 35 to 44 | 2.5% | 9.7% | 12.9% |
| Age 45 to 54 | 0.0% | 12.5% | 12.6% |
| Age 55 to 59 | 20.3% | 4.2% | 6.7% |
| Age 60 to 64 | 17.7% | 5.6% | 6.3% |
| Age 65 to 74 | 31.6% | 19.4% | 9.6% |
| Age 75 to 84 | 11.4% | 6.9% | 4.5% |
| Age 85 and over | 2.5% | 12.5% | 1.9% |
| space1 | | | |
| Race | | | |
| | Kirk, CO | Joes, CO | United States |
| White | 100.0% | 100.0% | 59.4% |
| Black | 0.0% | 0.0% | 12.2% |
| Asian | 0.0% | 0.0% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 0.0% | 0.0% | 3.2% |
| Hispanic | 0.0% | 0.0% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Kirk, CO | Joes, CO | United States |
| Married Population | 72.4% | 71.7% | 49.8% |
| Currently Married | 72.4% | 63.3% | 48.0% |
| Married but Separated | 0.0% | 8.3% | 1.8% |
| Single Population | 27.6% | 28.3% | 50.2% |
| Never Married | 7.9% | 11.7% | 33.8% |
| Divorced | 7.9% | 13.3% | 10.8% |
| Widowed | 11.8% | 3.3% | 5.6% |
| space5 | | | |
| Household Size | 1.68 | 2.48 | 2.60 |
| Households | 47 | 29 | 124,010,992 |
| Family Households | 25 | 20 | 80,755,759 |
| Married couple, w/children | 0.0% | 10.0% | 30.5% |
| Married couple, no children | 92.0% | 60.0% | 42.9% |
| Non Family Households | 22 | 9 | 43,255,233 |
| Single householder, w/children | 8.0% | 20.0% | 15.8% |
| Single householder, no children | 0.0% | 10.0% | 10.8% |