| | Gunbarrel, CO | Urbana, IL | United States |
| Population | 10,199 | 39,189 | 329,725,481 |
| Female Population | 49.4% | 49.7% | 50.5% |
| Male Population | 50.6% | 50.3% | 49.5% |
| Median Age | 40 | 25.2 | 38.4 |
| space3 | | | |
| Population - 2010 | 9,473 | 42,247 | 309,327,143 |
| Population - 2000 | 9,435 | 36,395 | 285,036,114 |
| Population - 1990 | 9,388 | 36,344 | 251,960,433 |
| Pop. 2000 to Now | 1.5% | 14.6% | 15.6% |
| Pop. 1990 to Now | 2.0% | 14.8% | 30.8% |
| space4 | | | |
| Population Density | 1,622.0 | 3,315.8 | 93.4 |
| Land Area | 6.3 | 11.8 | 3,531,905.4 |
| Water Area | 0.1 | 0.1 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Gunbarrel, CO | Urbana, IL | United States |
| Age 0 to 4 | 5.1% | 4.3% | 5.9% |
| Age 5 to 9 | 2.8% | 2.4% | 6.1% |
| Age 10 to 14 | 4.7% | 3.0% | 6.6% |
| Age 15 to 17 | 2.7% | 1.8% | 3.9% |
| Age 18 to 20 | 3.8% | 20.0% | 4.0% |
| Age 21 to 24 | 4.6% | 17.8% | 5.2% |
| Age 25 to 34 | 19.9% | 17.4% | 13.8% |
| Age 35 to 44 | 10.9% | 8.4% | 12.9% |
| Age 45 to 54 | 15.9% | 5.9% | 12.6% |
| Age 55 to 59 | 8.1% | 4.0% | 6.7% |
| Age 60 to 64 | 6.0% | 3.8% | 6.3% |
| Age 65 to 74 | 9.3% | 6.6% | 9.6% |
| Age 75 to 84 | 5.3% | 2.5% | 4.5% |
| Age 85 and over | 1.0% | 2.1% | 1.9% |
| space1 | | | |
| Race | | | |
| | Gunbarrel, CO | Urbana, IL | United States |
| White | 90.1% | 55.0% | 59.4% |
| Black | 0.1% | 16.7% | 12.2% |
| Asian | 3.1% | 16.5% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.6% | 0.4% | 0.4% |
| Two or More Races | 3.3% | 3.1% | 3.2% |
| Hispanic | 2.8% | 8.2% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Gunbarrel, CO | Urbana, IL | United States |
| Married Population | 44.9% | 26.9% | 49.8% |
| Currently Married | 44.1% | 26.4% | 48.0% |
| Married but Separated | 0.8% | 0.5% | 1.8% |
| Single Population | 55.1% | 73.1% | 50.2% |
| Never Married | 40.8% | 63.5% | 33.8% |
| Divorced | 11.5% | 5.8% | 10.8% |
| Widowed | 2.8% | 3.8% | 5.6% |
| space5 | | | |
| Household Size | 2.27 | 2.03 | 2.60 |
| Households | 4,495 | 16,022 | 124,010,992 |
| Family Households | 2,321 | 5,927 | 80,755,759 |
| Married couple, w/children | 31.8% | 22.6% | 30.5% |
| Married couple, no children | 50.0% | 48.6% | 42.9% |
| Non Family Households | 2,174 | 10,095 | 43,255,233 |
| Single householder, w/children | 8.8% | 17.9% | 15.8% |
| Single householder, no children | 9.3% | 10.9% | 10.8% |