| | Waterloo, WI | Crawfordsville, IN | United States |
| Population | 3,458 | 16,279 | 329,725,481 |
| Female Population | 50.9% | 48.6% | 50.5% |
| Male Population | 49.1% | 51.4% | 49.5% |
| Median Age | 43.1 | 36.1 | 38.4 |
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| Population - 2010 | 3,339 | 15,955 | 309,327,143 |
| Population - 2000 | 3,259 | 15,243 | 285,036,114 |
| Population - 1990 | 2,712 | 13,584 | 251,960,433 |
| Pop. 2000 to Now | 1.9% | 6.0% | 15.6% |
| Pop. 1990 to Now | 22.5% | 18.9% | 30.8% |
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| Population Density | 911.4 | 1,683.5 | 93.4 |
| Land Area | 3.8 | 9.7 | 3,531,905.4 |
| Water Area | 0.1 | 0.0 | 264,836.8 |
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| Est. Total Population By Age | | | |
| | Waterloo, WI | Crawfordsville, IN | United States |
| Age 0 to 4 | 5.0% | 7.3% | 5.9% |
| Age 5 to 9 | 9.8% | 7.0% | 6.1% |
| Age 10 to 14 | 4.4% | 5.5% | 6.6% |
| Age 15 to 17 | 1.7% | 3.5% | 3.9% |
| Age 18 to 20 | 0.9% | 7.1% | 4.0% |
| Age 21 to 24 | 4.6% | 4.7% | 5.2% |
| Age 25 to 34 | 10.4% | 13.6% | 13.8% |
| Age 35 to 44 | 16.7% | 11.3% | 12.9% |
| Age 45 to 54 | 15.6% | 10.4% | 12.6% |
| Age 55 to 59 | 7.9% | 5.8% | 6.7% |
| Age 60 to 64 | 6.8% | 6.5% | 6.3% |
| Age 65 to 74 | 10.2% | 8.8% | 9.6% |
| Age 75 to 84 | 3.5% | 6.3% | 4.5% |
| Age 85 and over | 2.7% | 2.3% | 1.9% |
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| Race | | | |
| | Waterloo, WI | Crawfordsville, IN | United States |
| White | 86.3% | 85.9% | 59.4% |
| Black | 0.0% | 1.7% | 12.2% |
| Asian | 0.3% | 0.9% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.1% | 0.2% |
| Other | 0.0% | 0.4% | 0.4% |
| Two or More Races | 6.4% | 3.0% | 3.2% |
| Hispanic | 7.0% | 8.0% | 18.4% |
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| Marriage & Family | | | |
| | Waterloo, WI | Crawfordsville, IN | United States |
| Married Population | 54.3% | 44.2% | 49.8% |
| Currently Married | 52.8% | 41.8% | 48.0% |
| Married but Separated | 1.5% | 2.4% | 1.8% |
| Single Population | 45.7% | 55.8% | 50.2% |
| Never Married | 31.9% | 33.1% | 33.8% |
| Divorced | 8.4% | 13.9% | 10.8% |
| Widowed | 5.4% | 8.9% | 5.6% |
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| Household Size | 2.01 | 2.25 | 2.60 |
| Households | 1,709 | 6,687 | 124,010,992 |
| Family Households | 1,050 | 3,620 | 80,755,759 |
| Married couple, w/children | 21.4% | 29.6% | 30.5% |
| Married couple, no children | 50.3% | 41.2% | 42.9% |
| Non Family Households | 659 | 3,067 | 43,255,233 |
| Single householder, w/children | 26.9% | 21.9% | 15.8% |
| Single householder, no children | 1.4% | 7.2% | 10.8% |