| | Checotah, OK | Chelsea, OK | United States |
| Population | 3,034 | 2,041 | 329,725,481 |
| Female Population | 53.3% | 52.0% | 50.5% |
| Male Population | 46.7% | 48.0% | 49.5% |
| Median Age | 39.6 | 31.9 | 38.4 |
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| Population - 2010 | 3,326 | 1,972 | 309,327,143 |
| Population - 2000 | 3,481 | 2,136 | 285,036,114 |
| Population - 1990 | 3,290 | 1,620 | 251,960,433 |
| Pop. 2000 to Now | -11.7% | -12.1% | 15.6% |
| Pop. 1990 to Now | -6.5% | 15.9% | 30.8% |
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| Population Density | 338.8 | 1,151.8 | 93.4 |
| Land Area | 9.0 | 1.8 | 3,531,905.4 |
| Water Area | 0.1 | 0.0 | 264,836.8 |
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| Est. Total Population By Age | | | |
| | Checotah, OK | Chelsea, OK | United States |
| Age 0 to 4 | 8.8% | 7.3% | 5.9% |
| Age 5 to 9 | 5.7% | 7.3% | 6.1% |
| Age 10 to 14 | 7.3% | 6.4% | 6.6% |
| Age 15 to 17 | 1.4% | 5.5% | 3.9% |
| Age 18 to 20 | 4.3% | 5.8% | 4.0% |
| Age 21 to 24 | 3.2% | 5.5% | 5.2% |
| Age 25 to 34 | 14.8% | 15.9% | 13.8% |
| Age 35 to 44 | 10.3% | 11.4% | 12.9% |
| Age 45 to 54 | 13.2% | 9.8% | 12.6% |
| Age 55 to 59 | 6.0% | 6.0% | 6.7% |
| Age 60 to 64 | 6.5% | 7.9% | 6.3% |
| Age 65 to 74 | 9.0% | 5.4% | 9.6% |
| Age 75 to 84 | 6.9% | 4.0% | 4.5% |
| Age 85 and over | 2.8% | 1.9% | 1.9% |
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| Race | | | |
| | Checotah, OK | Chelsea, OK | United States |
| White | 43.9% | 58.3% | 59.4% |
| Black | 6.0% | 0.2% | 12.2% |
| Asian | 2.8% | 0.1% | 5.6% |
| Native American | 21.7% | 26.1% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.6% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 16.2% | 13.9% | 3.2% |
| Hispanic | 9.5% | 0.7% | 18.4% |
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| Marriage & Family | | | |
| | Checotah, OK | Chelsea, OK | United States |
| Married Population | 40.5% | 44.3% | 49.8% |
| Currently Married | 36.5% | 41.9% | 48.0% |
| Married but Separated | 4.0% | 2.4% | 1.8% |
| Single Population | 59.5% | 55.7% | 50.2% |
| Never Married | 30.5% | 30.6% | 33.8% |
| Divorced | 17.7% | 16.2% | 10.8% |
| Widowed | 11.2% | 8.9% | 5.6% |
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| Household Size | 2.64 | 2.63 | 2.60 |
| Households | 1,130 | 775 | 124,010,992 |
| Family Households | 764 | 513 | 80,755,759 |
| Married couple, w/children | 18.3% | 25.1% | 30.5% |
| Married couple, no children | 36.5% | 32.7% | 42.9% |
| Non Family Households | 366 | 262 | 43,255,233 |
| Single householder, w/children | 25.5% | 31.2% | 15.8% |
| Single householder, no children | 19.6% | 10.9% | 10.8% |