| | Carnegie, OK | Marlow, OK | United States |
| Population | 1,615 | 4,387 | 329,725,481 |
| Female Population | 52.6% | 49.1% | 50.5% |
| Male Population | 47.4% | 50.9% | 49.5% |
| Median Age | 36.3 | 39.3 | 38.4 |
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| Population - 2010 | 1,727 | 4,669 | 309,327,143 |
| Population - 2000 | 1,637 | 4,592 | 285,036,114 |
| Population - 1990 | 1,593 | 4,416 | 251,960,433 |
| Pop. 2000 to Now | 0.3% | -3.8% | 15.6% |
| Pop. 1990 to Now | 3.1% | 0.0% | 30.8% |
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| Population Density | 1,177.1 | 629.4 | 93.4 |
| Land Area | 1.4 | 7.0 | 3,531,905.4 |
| Water Area | 0.0 | 0.1 | 264,836.8 |
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| Est. Total Population By Age | | | |
| | Carnegie, OK | Marlow, OK | United States |
| Age 0 to 4 | 6.6% | 7.2% | 5.9% |
| Age 5 to 9 | 7.9% | 7.5% | 6.1% |
| Age 10 to 14 | 9.2% | 6.8% | 6.6% |
| Age 15 to 17 | 3.4% | 4.0% | 3.9% |
| Age 18 to 20 | 5.6% | 2.9% | 4.0% |
| Age 21 to 24 | 3.2% | 3.9% | 5.2% |
| Age 25 to 34 | 11.1% | 10.4% | 13.8% |
| Age 35 to 44 | 13.8% | 12.1% | 12.9% |
| Age 45 to 54 | 10.5% | 13.4% | 12.6% |
| Age 55 to 59 | 6.3% | 5.5% | 6.7% |
| Age 60 to 64 | 4.1% | 5.0% | 6.3% |
| Age 65 to 74 | 9.3% | 10.9% | 9.6% |
| Age 75 to 84 | 7.4% | 4.6% | 4.5% |
| Age 85 and over | 1.5% | 5.8% | 1.9% |
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| Race | | | |
| | Carnegie, OK | Marlow, OK | United States |
| White | 47.3% | 83.5% | 59.4% |
| Black | 2.3% | 0.2% | 12.2% |
| Asian | 0.0% | 0.1% | 5.6% |
| Native American | 24.8% | 6.2% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 6.7% | 5.3% | 3.2% |
| Hispanic | 18.8% | 4.7% | 18.4% |
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| Marriage & Family | | | |
| | Carnegie, OK | Marlow, OK | United States |
| Married Population | 43.2% | 51.6% | 49.8% |
| Currently Married | 40.7% | 49.9% | 48.0% |
| Married but Separated | 2.5% | 1.7% | 1.8% |
| Single Population | 56.8% | 48.4% | 50.2% |
| Never Married | 30.3% | 20.0% | 33.8% |
| Divorced | 17.4% | 18.0% | 10.8% |
| Widowed | 9.1% | 10.4% | 5.6% |
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| Household Size | 2.67 | 2.56 | 2.60 |
| Households | 587 | 1,673 | 124,010,992 |
| Family Households | 384 | 1,086 | 80,755,759 |
| Married couple, w/children | 27.3% | 34.0% | 30.5% |
| Married couple, no children | 33.9% | 40.9% | 42.9% |
| Non Family Households | 203 | 587 | 43,255,233 |
| Single householder, w/children | 23.4% | 16.9% | 15.8% |
| Single householder, no children | 15.4% | 8.3% | 10.8% |