| | Keokuk, IA | New River, AZ | United States |
| Population | 9,977 | 17,731 | 329,725,481 |
| Female Population | 53.0% | 52.1% | 50.5% |
| Male Population | 47.0% | 47.9% | 49.5% |
| Median Age | 40.2 | 49 | 38.4 |
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| Population - 2010 | 10,770 | 11,710 | 309,327,143 |
| Population - 2000 | 11,427 | 10,740 | 285,036,114 |
| Population - 1990 | 12,451 | 3,677 | 251,960,433 |
| Pop. 2000 to Now | -11.7% | 51.6% | 15.6% |
| Pop. 1990 to Now | -19.0% | 342.9% | 30.8% |
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| Population Density | 1,098.9 | 315.9 | 93.4 |
| Land Area | 9.1 | 56.1 | 3,531,905.4 |
| Water Area | 1.4 | 0.0 | 264,836.8 |
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| Est. Total Population By Age | | | |
| | Keokuk, IA | New River, AZ | United States |
| Age 0 to 4 | 6.5% | 4.9% | 5.9% |
| Age 5 to 9 | 5.9% | 4.8% | 6.1% |
| Age 10 to 14 | 7.0% | 5.5% | 6.6% |
| Age 15 to 17 | 2.7% | 4.5% | 3.9% |
| Age 18 to 20 | 2.9% | 2.4% | 4.0% |
| Age 21 to 24 | 4.7% | 2.6% | 5.2% |
| Age 25 to 34 | 14.8% | 6.7% | 13.8% |
| Age 35 to 44 | 11.4% | 11.1% | 12.9% |
| Age 45 to 54 | 9.7% | 19.3% | 12.6% |
| Age 55 to 59 | 6.0% | 12.2% | 6.7% |
| Age 60 to 64 | 8.1% | 7.0% | 6.3% |
| Age 65 to 74 | 12.4% | 13.8% | 9.6% |
| Age 75 to 84 | 5.3% | 4.5% | 4.5% |
| Age 85 and over | 2.6% | 0.8% | 1.9% |
| space1 | | | |
| Race | | | |
| | Keokuk, IA | New River, AZ | United States |
| White | 87.3% | 87.7% | 59.4% |
| Black | 4.1% | 1.0% | 12.2% |
| Asian | 1.0% | 1.6% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.1% | 0.4% |
| Two or More Races | 2.8% | 1.3% | 3.2% |
| Hispanic | 4.8% | 8.3% | 18.4% |
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| Marriage & Family | | | |
| | Keokuk, IA | New River, AZ | United States |
| Married Population | 43.5% | 63.7% | 49.8% |
| Currently Married | 42.0% | 63.6% | 48.0% |
| Married but Separated | 1.4% | 0.1% | 1.8% |
| Single Population | 56.5% | 36.3% | 50.2% |
| Never Married | 33.9% | 17.8% | 33.8% |
| Divorced | 15.8% | 13.9% | 10.8% |
| Widowed | 6.9% | 4.6% | 5.6% |
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| Household Size | 2.24 | 2.59 | 2.60 |
| Households | 4,386 | 6,812 | 124,010,992 |
| Family Households | 2,507 | 4,959 | 80,755,759 |
| Married couple, w/children | 21.8% | 35.8% | 30.5% |
| Married couple, no children | 44.0% | 56.0% | 42.9% |
| Non Family Households | 1,879 | 1,853 | 43,255,233 |
| Single householder, w/children | 25.5% | 4.1% | 15.8% |
| Single householder, no children | 8.7% | 4.1% | 10.8% |