| | Kellyville, OK | Elgin, OK | United States |
| Population | 1,171 | 3,498 | 329,725,481 |
| Female Population | 50.8% | 49.4% | 50.5% |
| Male Population | 49.2% | 50.6% | 49.5% |
| Median Age | 36.6 | 31.3 | 38.4 |
| space3 | | | |
| Population - 2010 | 1,131 | 2,239 | 309,327,143 |
| Population - 2000 | 906 | 1,210 | 285,036,114 |
| Population - 1990 | 984 | 975 | 251,960,433 |
| Pop. 2000 to Now | 24.4% | 167.4% | 15.6% |
| Pop. 1990 to Now | 14.5% | 231.9% | 30.8% |
| space4 | | | |
| Population Density | 996.6 | 911.2 | 93.4 |
| Land Area | 1.2 | 3.8 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Kellyville, OK | Elgin, OK | United States |
| Age 0 to 4 | 4.0% | 8.7% | 5.9% |
| Age 5 to 9 | 9.4% | 7.5% | 6.1% |
| Age 10 to 14 | 9.7% | 10.8% | 6.6% |
| Age 15 to 17 | 4.3% | 4.7% | 3.9% |
| Age 18 to 20 | 3.5% | 2.1% | 4.0% |
| Age 21 to 24 | 2.6% | 4.9% | 5.2% |
| Age 25 to 34 | 13.7% | 22.2% | 13.8% |
| Age 35 to 44 | 16.0% | 12.2% | 12.9% |
| Age 45 to 54 | 11.5% | 9.3% | 12.6% |
| Age 55 to 59 | 8.5% | 4.9% | 6.7% |
| Age 60 to 64 | 5.4% | 2.1% | 6.3% |
| Age 65 to 74 | 5.1% | 8.7% | 9.6% |
| Age 75 to 84 | 4.0% | 1.6% | 4.5% |
| Age 85 and over | 2.3% | 0.1% | 1.9% |
| space1 | | | |
| Race | | | |
| | Kellyville, OK | Elgin, OK | United States |
| White | 67.5% | 66.8% | 59.4% |
| Black | 0.3% | 4.2% | 12.2% |
| Asian | 0.0% | 1.3% | 5.6% |
| Native American | 19.1% | 0.9% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.3% | 0.4% |
| Two or More Races | 6.7% | 10.4% | 3.2% |
| Hispanic | 6.2% | 16.1% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Kellyville, OK | Elgin, OK | United States |
| Married Population | 53.8% | 63.3% | 49.8% |
| Currently Married | 49.7% | 61.5% | 48.0% |
| Married but Separated | 4.1% | 1.8% | 1.8% |
| Single Population | 46.2% | 36.7% | 50.2% |
| Never Married | 20.1% | 20.0% | 33.8% |
| Divorced | 22.2% | 11.2% | 10.8% |
| Widowed | 3.9% | 5.4% | 5.6% |
| space5 | | | |
| Household Size | 2.56 | 2.77 | 2.60 |
| Households | 458 | 1,261 | 124,010,992 |
| Family Households | 336 | 915 | 80,755,759 |
| Married couple, w/children | 23.8% | 51.6% | 30.5% |
| Married couple, no children | 37.5% | 32.6% | 42.9% |
| Non Family Households | 122 | 346 | 43,255,233 |
| Single householder, w/children | 29.2% | 12.4% | 15.8% |
| Single householder, no children | 9.5% | 3.5% | 10.8% |