| | Beaver, OK | Willcox, AZ | United States |
| Population | 1,489 | 3,240 | 329,725,481 |
| Female Population | 49.0% | 51.1% | 50.5% |
| Male Population | 51.0% | 48.9% | 49.5% |
| Median Age | 33.4 | 30.5 | 38.4 |
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| Population - 2010 | 1,507 | 3,744 | 309,327,143 |
| Population - 2000 | 1,570 | 3,733 | 285,036,114 |
| Population - 1990 | 1,584 | 3,122 | 251,960,433 |
| Pop. 2000 to Now | -13.1% | -6.0% | 15.6% |
| Pop. 1990 to Now | -13.9% | 12.4% | 30.8% |
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| Population Density | 1,288.1 | 526.9 | 93.4 |
| Land Area | 1.2 | 6.1 | 3,531,905.4 |
| Water Area | 0.0 | 0.1 | 264,836.8 |
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| Est. Total Population By Age | | | |
| | Beaver, OK | Willcox, AZ | United States |
| Age 0 to 4 | 7.3% | 6.7% | 5.9% |
| Age 5 to 9 | 10.1% | 9.1% | 6.1% |
| Age 10 to 14 | 7.1% | 6.5% | 6.6% |
| Age 15 to 17 | 4.4% | 2.7% | 3.9% |
| Age 18 to 20 | 2.8% | 3.9% | 4.0% |
| Age 21 to 24 | 4.0% | 6.1% | 5.2% |
| Age 25 to 34 | 15.5% | 21.1% | 13.8% |
| Age 35 to 44 | 10.7% | 10.6% | 12.9% |
| Age 45 to 54 | 12.6% | 8.6% | 12.6% |
| Age 55 to 59 | 7.7% | 5.8% | 6.7% |
| Age 60 to 64 | 4.0% | 4.7% | 6.3% |
| Age 65 to 74 | 7.9% | 9.0% | 9.6% |
| Age 75 to 84 | 4.4% | 4.2% | 4.5% |
| Age 85 and over | 1.7% | 0.9% | 1.9% |
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| Race | | | |
| | Beaver, OK | Willcox, AZ | United States |
| White | 59.5% | 31.4% | 59.4% |
| Black | 0.8% | 0.5% | 12.2% |
| Asian | 0.0% | 0.6% | 5.6% |
| Native American | 0.7% | 1.1% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 1.0% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 2.9% | 2.4% | 3.2% |
| Hispanic | 36.1% | 63.0% | 18.4% |
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| Marriage & Family | | | |
| | Beaver, OK | Willcox, AZ | United States |
| Married Population | 56.3% | 44.4% | 49.8% |
| Currently Married | 55.9% | 42.5% | 48.0% |
| Married but Separated | 0.4% | 1.9% | 1.8% |
| Single Population | 43.7% | 55.6% | 50.2% |
| Never Married | 26.5% | 40.8% | 33.8% |
| Divorced | 10.8% | 9.4% | 10.8% |
| Widowed | 6.4% | 5.4% | 5.6% |
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| Household Size | 2.73 | 2.84 | 2.60 |
| Households | 520 | 1,135 | 124,010,992 |
| Family Households | 382 | 660 | 80,755,759 |
| Married couple, w/children | 30.1% | 29.5% | 30.5% |
| Married couple, no children | 52.4% | 34.2% | 42.9% |
| Non Family Households | 138 | 475 | 43,255,233 |
| Single householder, w/children | 13.9% | 24.5% | 15.8% |
| Single householder, no children | 3.7% | 11.7% | 10.8% |