| | Spencer, OK | Sperry, OK | United States |
| Population | 3,973 | 1,137 | 329,725,481 |
| Female Population | 51.5% | 52.2% | 50.5% |
| Male Population | 48.6% | 47.8% | 49.5% |
| Median Age | 47.4 | 35.3 | 38.4 |
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| Population - 2010 | 3,930 | 1,210 | 309,327,143 |
| Population - 2000 | 3,746 | 981 | 285,036,114 |
| Population - 1990 | 3,972 | 937 | 251,960,433 |
| Pop. 2000 to Now | 5.7% | 38.1% | 15.6% |
| Pop. 1990 to Now | -0.3% | 44.6% | 30.8% |
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| Population Density | 740.1 | 680.4 | 93.4 |
| Land Area | 5.4 | 1.7 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
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| Est. Total Population By Age | | | |
| | Spencer, OK | Sperry, OK | United States |
| Age 0 to 4 | 2.7% | 6.1% | 5.9% |
| Age 5 to 9 | 7.3% | 8.5% | 6.1% |
| Age 10 to 14 | 6.8% | 7.9% | 6.6% |
| Age 15 to 17 | 4.4% | 3.9% | 3.9% |
| Age 18 to 20 | 0.6% | 3.0% | 4.0% |
| Age 21 to 24 | 4.2% | 4.4% | 5.2% |
| Age 25 to 34 | 11.3% | 15.8% | 13.8% |
| Age 35 to 44 | 11.8% | 13.4% | 12.9% |
| Age 45 to 54 | 11.1% | 10.9% | 12.6% |
| Age 55 to 59 | 12.5% | 6.2% | 6.7% |
| Age 60 to 64 | 3.9% | 5.5% | 6.3% |
| Age 65 to 74 | 8.3% | 8.2% | 9.6% |
| Age 75 to 84 | 10.1% | 5.5% | 4.5% |
| Age 85 and over | 5.1% | 0.8% | 1.9% |
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| Race | | | |
| | Spencer, OK | Sperry, OK | United States |
| White | 31.8% | 69.1% | 59.4% |
| Black | 55.1% | 0.0% | 12.2% |
| Asian | 0.6% | 0.0% | 5.6% |
| Native American | 0.4% | 14.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.3% | 0.4% |
| Two or More Races | 4.6% | 9.8% | 3.2% |
| Hispanic | 7.5% | 6.9% | 18.4% |
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| Marriage & Family | | | |
| | Spencer, OK | Sperry, OK | United States |
| Married Population | 42.0% | 45.6% | 49.8% |
| Currently Married | 40.6% | 43.7% | 48.0% |
| Married but Separated | 1.4% | 1.9% | 1.8% |
| Single Population | 58.0% | 54.4% | 50.2% |
| Never Married | 26.2% | 29.4% | 33.8% |
| Divorced | 23.0% | 16.8% | 10.8% |
| Widowed | 8.8% | 8.2% | 5.6% |
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| Household Size | 2.23 | 2.67 | 2.60 |
| Households | 1,779 | 426 | 124,010,992 |
| Family Households | 1,080 | 267 | 80,755,759 |
| Married couple, w/children | 23.3% | 28.5% | 30.5% |
| Married couple, no children | 38.3% | 40.8% | 42.9% |
| Non Family Households | 699 | 159 | 43,255,233 |
| Single householder, w/children | 17.5% | 23.6% | 15.8% |
| Single householder, no children | 20.8% | 7.1% | 10.8% |