| | Dewey, OK | Coffeyville, KS | United States |
| Population | 3,375 | 9,032 | 329,725,481 |
| Female Population | 54.7% | 50.7% | 50.5% |
| Male Population | 45.3% | 49.4% | 49.5% |
| Median Age | 47.8 | 40.5 | 38.4 |
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| Population - 2010 | 3,407 | 10,268 | 309,327,143 |
| Population - 2000 | 3,179 | 11,021 | 285,036,114 |
| Population - 1990 | 3,326 | 12,917 | 251,960,433 |
| Pop. 2000 to Now | 7.3% | -16.8% | 15.6% |
| Pop. 1990 to Now | 2.6% | -29.0% | 30.8% |
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| Population Density | 1,183.0 | 954.7 | 93.4 |
| Land Area | 2.9 | 9.5 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
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| Est. Total Population By Age | | | |
| | Dewey, OK | Coffeyville, KS | United States |
| Age 0 to 4 | 3.5% | 5.6% | 5.9% |
| Age 5 to 9 | 4.3% | 7.7% | 6.1% |
| Age 10 to 14 | 11.2% | 4.8% | 6.6% |
| Age 15 to 17 | 4.8% | 4.1% | 3.9% |
| Age 18 to 20 | 3.7% | 5.4% | 4.0% |
| Age 21 to 24 | 3.7% | 4.0% | 5.2% |
| Age 25 to 34 | 6.6% | 14.0% | 13.8% |
| Age 35 to 44 | 9.1% | 9.9% | 12.9% |
| Age 45 to 54 | 13.7% | 9.0% | 12.6% |
| Age 55 to 59 | 9.5% | 10.2% | 6.7% |
| Age 60 to 64 | 10.7% | 6.7% | 6.3% |
| Age 65 to 74 | 12.0% | 8.6% | 9.6% |
| Age 75 to 84 | 5.6% | 6.9% | 4.5% |
| Age 85 and over | 1.6% | 3.2% | 1.9% |
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| Race | | | |
| | Dewey, OK | Coffeyville, KS | United States |
| White | 74.0% | 62.8% | 59.4% |
| Black | 0.6% | 9.9% | 12.2% |
| Asian | 0.2% | 0.7% | 5.6% |
| Native American | 8.9% | 4.4% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.3% | 0.4% |
| Two or More Races | 7.9% | 7.4% | 3.2% |
| Hispanic | 8.4% | 14.5% | 18.4% |
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| Marriage & Family | | | |
| | Dewey, OK | Coffeyville, KS | United States |
| Married Population | 45.0% | 38.7% | 49.8% |
| Currently Married | 44.3% | 36.3% | 48.0% |
| Married but Separated | 0.7% | 2.4% | 1.8% |
| Single Population | 55.0% | 61.3% | 50.2% |
| Never Married | 23.9% | 31.5% | 33.8% |
| Divorced | 21.5% | 17.2% | 10.8% |
| Widowed | 9.6% | 12.5% | 5.6% |
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| Household Size | 2.56 | 2.37 | 2.60 |
| Households | 1,277 | 3,605 | 124,010,992 |
| Family Households | 819 | 1,792 | 80,755,759 |
| Married couple, w/children | 28.1% | 21.2% | 30.5% |
| Married couple, no children | 39.4% | 41.4% | 42.9% |
| Non Family Households | 458 | 1,813 | 43,255,233 |
| Single householder, w/children | 23.4% | 23.2% | 15.8% |
| Single householder, no children | 9.0% | 14.3% | 10.8% |