| | Hamilton, IL | Wyoming, IL | United States |
| Population | 2,777 | 1,428 | 329,725,481 |
| Female Population | 56.3% | 54.1% | 50.5% |
| Male Population | 43.7% | 45.9% | 49.5% |
| Median Age | 39.4 | 45.7 | 38.4 |
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| Population - 2010 | 2,949 | 1,425 | 309,327,143 |
| Population - 2000 | 3,029 | 1,424 | 285,036,114 |
| Population - 1990 | 3,281 | 1,462 | 251,960,433 |
| Pop. 2000 to Now | -11.8% | -12.0% | 15.6% |
| Pop. 1990 to Now | -18.5% | -14.3% | 30.8% |
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| Population Density | 779.8 | 1,672.1 | 93.4 |
| Land Area | 3.6 | 0.9 | 3,531,905.4 |
| Water Area | 1.8 | 0.0 | 264,836.8 |
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| Est. Total Population By Age | | | |
| | Hamilton, IL | Wyoming, IL | United States |
| Age 0 to 4 | 5.9% | 4.9% | 5.9% |
| Age 5 to 9 | 8.2% | 5.7% | 6.1% |
| Age 10 to 14 | 9.0% | 3.3% | 6.6% |
| Age 15 to 17 | 3.8% | 3.4% | 3.9% |
| Age 18 to 20 | 1.5% | 4.7% | 4.0% |
| Age 21 to 24 | 3.5% | 3.6% | 5.2% |
| Age 25 to 34 | 12.4% | 11.4% | 13.8% |
| Age 35 to 44 | 12.6% | 11.6% | 12.9% |
| Age 45 to 54 | 11.5% | 14.1% | 12.6% |
| Age 55 to 59 | 7.1% | 5.6% | 6.7% |
| Age 60 to 64 | 3.8% | 6.2% | 6.3% |
| Age 65 to 74 | 8.5% | 16.0% | 9.6% |
| Age 75 to 84 | 8.3% | 7.1% | 4.5% |
| Age 85 and over | 3.9% | 2.5% | 1.9% |
| space1 | | | |
| Race | | | |
| | Hamilton, IL | Wyoming, IL | United States |
| White | 95.8% | 95.0% | 59.4% |
| Black | 1.5% | 1.3% | 12.2% |
| Asian | 0.8% | 2.2% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 1.9% | 1.3% | 3.2% |
| Hispanic | 0.0% | 0.2% | 18.4% |
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| Marriage & Family | | | |
| | Hamilton, IL | Wyoming, IL | United States |
| Married Population | 54.0% | 49.1% | 49.8% |
| Currently Married | 52.9% | 47.4% | 48.0% |
| Married but Separated | 1.2% | 1.7% | 1.8% |
| Single Population | 46.0% | 50.9% | 50.2% |
| Never Married | 22.4% | 28.1% | 33.8% |
| Divorced | 15.5% | 11.1% | 10.8% |
| Widowed | 8.1% | 11.7% | 5.6% |
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| Household Size | 2.48 | 2.16 | 2.60 |
| Households | 1,094 | 660 | 124,010,992 |
| Family Households | 667 | 372 | 80,755,759 |
| Married couple, w/children | 47.7% | 23.9% | 30.5% |
| Married couple, no children | 33.7% | 52.2% | 42.9% |
| Non Family Households | 427 | 288 | 43,255,233 |
| Single householder, w/children | 13.2% | 11.8% | 15.8% |
| Single householder, no children | 5.4% | 12.1% | 10.8% |