| | Stafford, KS | Winnebago, IL | United States |
| Population | 765 | 3,323 | 329,725,481 |
| Female Population | 52.7% | 52.5% | 50.5% |
| Male Population | 47.3% | 47.5% | 49.5% |
| Median Age | 44.8 | 39.6 | 38.4 |
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| Population - 2010 | 1,041 | 3,136 | 309,327,143 |
| Population - 2000 | 1,161 | 2,958 | 285,036,114 |
| Population - 1990 | 1,344 | 1,840 | 251,960,433 |
| Pop. 2000 to Now | -20.8% | 0.5% | 15.6% |
| Pop. 1990 to Now | -31.6% | 61.6% | 30.8% |
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| Population Density | 836.1 | 1,715.5 | 93.4 |
| Land Area | 0.9 | 1.9 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
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| Est. Total Population By Age | | | |
| | Stafford, KS | Winnebago, IL | United States |
| Age 0 to 4 | 3.9% | 5.4% | 5.9% |
| Age 5 to 9 | 7.1% | 5.1% | 6.1% |
| Age 10 to 14 | 7.5% | 10.2% | 6.6% |
| Age 15 to 17 | 3.1% | 4.9% | 3.9% |
| Age 18 to 20 | 0.9% | 3.6% | 4.0% |
| Age 21 to 24 | 3.8% | 3.6% | 5.2% |
| Age 25 to 34 | 13.2% | 10.3% | 13.8% |
| Age 35 to 44 | 10.7% | 12.8% | 12.9% |
| Age 45 to 54 | 8.6% | 12.4% | 12.6% |
| Age 55 to 59 | 5.6% | 7.0% | 6.7% |
| Age 60 to 64 | 5.8% | 6.6% | 6.3% |
| Age 65 to 74 | 13.5% | 10.8% | 9.6% |
| Age 75 to 84 | 11.1% | 5.7% | 4.5% |
| Age 85 and over | 5.2% | 1.6% | 1.9% |
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| Race | | | |
| | Stafford, KS | Winnebago, IL | United States |
| White | 92.3% | 94.6% | 59.4% |
| Black | 1.4% | 1.4% | 12.2% |
| Asian | 0.5% | 0.5% | 5.6% |
| Native American | 0.0% | 0.3% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 0.7% | 0.7% | 3.2% |
| Hispanic | 5.1% | 2.6% | 18.4% |
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| Marriage & Family | | | |
| | Stafford, KS | Winnebago, IL | United States |
| Married Population | 54.8% | 59.1% | 49.8% |
| Currently Married | 53.0% | 58.7% | 48.0% |
| Married but Separated | 1.8% | 0.5% | 1.8% |
| Single Population | 45.2% | 40.9% | 50.2% |
| Never Married | 16.8% | 25.1% | 33.8% |
| Divorced | 14.3% | 10.1% | 10.8% |
| Widowed | 14.1% | 5.7% | 5.6% |
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| Household Size | 2.13 | 2.59 | 2.60 |
| Households | 328 | 1,282 | 124,010,992 |
| Family Households | 191 | 905 | 80,755,759 |
| Married couple, w/children | 28.3% | 28.6% | 30.5% |
| Married couple, no children | 52.4% | 54.0% | 42.9% |
| Non Family Households | 137 | 377 | 43,255,233 |
| Single householder, w/children | 9.9% | 15.2% | 15.8% |
| Single householder, no children | 9.4% | 2.1% | 10.8% |