| | Cleora, OK | Copeland, OK | United States |
| Population | 1,425 | 1,553 | 329,725,481 |
| Female Population | 47.7% | 51.8% | 50.5% |
| Male Population | 52.4% | 48.2% | 49.5% |
| Median Age | 63 | 56 | 38.4 |
| space3 | | | |
| Population - 2010 | 1,478 | 1,579 | 309,327,143 |
| Population - 2000 | 1,113 | 1,448 | 285,036,114 |
| Population - 1990 | 909 | 1,022 | 251,960,433 |
| Pop. 2000 to Now | 30.2% | 28.7% | 15.6% |
| Pop. 1990 to Now | 59.4% | 82.3% | 30.8% |
| space4 | | | |
| Population Density | 120.2 | 213.0 | 93.4 |
| Land Area | 11.9 | 7.3 | 3,531,905.4 |
| Water Area | 0.3 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Cleora, OK | Copeland, OK | United States |
| Age 0 to 4 | 2.1% | 4.2% | 5.9% |
| Age 5 to 9 | 0.8% | 4.6% | 6.1% |
| Age 10 to 14 | 3.5% | 6.2% | 6.6% |
| Age 15 to 17 | 0.6% | 2.3% | 3.9% |
| Age 18 to 20 | 3.9% | 2.1% | 4.0% |
| Age 21 to 24 | 0.5% | 6.2% | 5.2% |
| Age 25 to 34 | 3.5% | 7.4% | 13.8% |
| Age 35 to 44 | 6.0% | 4.3% | 12.9% |
| Age 45 to 54 | 9.4% | 11.0% | 12.6% |
| Age 55 to 59 | 12.6% | 8.0% | 6.7% |
| Age 60 to 64 | 9.1% | 8.8% | 6.3% |
| Age 65 to 74 | 30.3% | 13.8% | 9.6% |
| Age 75 to 84 | 16.2% | 19.1% | 4.5% |
| Age 85 and over | 1.5% | 2.0% | 1.9% |
| space1 | | | |
| Race | | | |
| | Cleora, OK | Copeland, OK | United States |
| White | 78.9% | 80.4% | 59.4% |
| Black | 0.0% | 0.0% | 12.2% |
| Asian | 0.2% | 0.0% | 5.6% |
| Native American | 17.5% | 10.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 2.9% | 4.2% | 3.2% |
| Hispanic | 0.6% | 5.4% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Cleora, OK | Copeland, OK | United States |
| Married Population | 66.1% | 57.5% | 49.8% |
| Currently Married | 66.1% | 55.3% | 48.0% |
| Married but Separated | 0.0% | 2.2% | 1.8% |
| Single Population | 33.9% | 42.5% | 50.2% |
| Never Married | 12.4% | 15.3% | 33.8% |
| Divorced | 11.0% | 10.5% | 10.8% |
| Widowed | 10.5% | 16.7% | 5.6% |
| space5 | | | |
| Household Size | 1.85 | 2.11 | 2.60 |
| Households | 771 | 736 | 124,010,992 |
| Family Households | 543 | 443 | 80,755,759 |
| Married couple, w/children | 9.4% | 28.4% | 30.5% |
| Married couple, no children | 80.8% | 52.8% | 42.9% |
| Non Family Households | 228 | 293 | 43,255,233 |
| Single householder, w/children | 4.2% | 10.8% | 15.8% |
| Single householder, no children | 5.5% | 7.9% | 10.8% |