| | Elk Creek, NE | Hiawatha, KS | United States |
| Population | 102 | 3,251 | 329,725,481 |
| Female Population | 63.7% | 52.5% | 50.5% |
| Male Population | 36.3% | 47.5% | 49.5% |
| Median Age | 45.2 | 41.5 | 38.4 |
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| Population - 2010 | 99 | 3,256 | 309,327,143 |
| Population - 2000 | 112 | 3,417 | 285,036,114 |
| Population - 1990 | 116 | 3,603 | 251,960,433 |
| Pop. 2000 to Now | -18.8% | -9.5% | 15.6% |
| Pop. 1990 to Now | -21.6% | -14.2% | 30.8% |
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| Population Density | 784.6 | 1,252.8 | 93.4 |
| Land Area | 0.1 | 2.6 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
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| Est. Total Population By Age | | | |
| | Elk Creek, NE | Hiawatha, KS | United States |
| Age 0 to 4 | 14.7% | 5.3% | 5.9% |
| Age 5 to 9 | 2.0% | 7.1% | 6.1% |
| Age 10 to 14 | 2.0% | 9.2% | 6.6% |
| Age 15 to 17 | 0.0% | 3.6% | 3.9% |
| Age 18 to 20 | 9.8% | 2.0% | 4.0% |
| Age 21 to 24 | 0.0% | 4.5% | 5.2% |
| Age 25 to 34 | 19.6% | 10.7% | 13.8% |
| Age 35 to 44 | 1.0% | 12.4% | 12.9% |
| Age 45 to 54 | 14.7% | 13.0% | 12.6% |
| Age 55 to 59 | 2.0% | 6.0% | 6.7% |
| Age 60 to 64 | 2.0% | 7.8% | 6.3% |
| Age 65 to 74 | 18.6% | 10.8% | 9.6% |
| Age 75 to 84 | 5.9% | 5.4% | 4.5% |
| Age 85 and over | 7.8% | 2.2% | 1.9% |
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| Race | | | |
| | Elk Creek, NE | Hiawatha, KS | United States |
| White | 80.4% | 90.0% | 59.4% |
| Black | 0.0% | 1.2% | 12.2% |
| Asian | 0.0% | 0.0% | 5.6% |
| Native American | 0.0% | 1.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 1.8% | 0.4% |
| Two or More Races | 19.6% | 3.6% | 3.2% |
| Hispanic | 0.0% | 2.5% | 18.4% |
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| Marriage & Family | | | |
| | Elk Creek, NE | Hiawatha, KS | United States |
| Married Population | 38.6% | 48.0% | 49.8% |
| Currently Married | 38.6% | 47.5% | 48.0% |
| Married but Separated | 0.0% | 0.5% | 1.8% |
| Single Population | 61.4% | 52.0% | 50.2% |
| Never Married | 32.5% | 23.5% | 33.8% |
| Divorced | 24.1% | 20.9% | 10.8% |
| Widowed | 4.8% | 7.6% | 5.6% |
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| Household Size | 2.08 | 2.56 | 2.60 |
| Households | 49 | 1,247 | 124,010,992 |
| Family Households | 30 | 655 | 80,755,759 |
| Married couple, w/children | 3.3% | 31.1% | 30.5% |
| Married couple, no children | 50.0% | 48.1% | 42.9% |
| Non Family Households | 19 | 592 | 43,255,233 |
| Single householder, w/children | 26.7% | 13.3% | 15.8% |
| Single householder, no children | 20.0% | 7.5% | 10.8% |