| | Conway Springs, KS | Andover, KS | United States |
| Population | 1,483 | 15,162 | 329,725,481 |
| Female Population | 50.3% | 50.2% | 50.5% |
| Male Population | 49.7% | 49.8% | 49.5% |
| Median Age | 28.9 | 34.3 | 38.4 |
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| Population - 2010 | 1,275 | 11,834 | 309,327,143 |
| Population - 2000 | 1,322 | 6,698 | 285,036,114 |
| Population - 1990 | 1,384 | 4,047 | 251,960,433 |
| Pop. 2000 to Now | -8.2% | 104.1% | 15.6% |
| Pop. 1990 to Now | -12.3% | 237.8% | 30.8% |
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| Population Density | 1,502.5 | 1,514.8 | 93.4 |
| Land Area | 1.0 | 10.0 | 3,531,905.4 |
| Water Area | 0.0 | 0.1 | 264,836.8 |
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| Est. Total Population By Age | | | |
| | Conway Springs, KS | Andover, KS | United States |
| Age 0 to 4 | 5.2% | 7.5% | 5.9% |
| Age 5 to 9 | 9.9% | 10.1% | 6.1% |
| Age 10 to 14 | 13.4% | 12.0% | 6.6% |
| Age 15 to 17 | 2.4% | 4.2% | 3.9% |
| Age 18 to 20 | 3.4% | 3.2% | 4.0% |
| Age 21 to 24 | 3.2% | 3.6% | 5.2% |
| Age 25 to 34 | 22.1% | 10.4% | 13.8% |
| Age 35 to 44 | 10.3% | 16.9% | 12.9% |
| Age 45 to 54 | 7.4% | 13.1% | 12.6% |
| Age 55 to 59 | 5.3% | 3.2% | 6.7% |
| Age 60 to 64 | 3.4% | 4.0% | 6.3% |
| Age 65 to 74 | 7.1% | 7.1% | 9.6% |
| Age 75 to 84 | 3.7% | 2.7% | 4.5% |
| Age 85 and over | 3.2% | 2.1% | 1.9% |
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| Race | | | |
| | Conway Springs, KS | Andover, KS | United States |
| White | 99.1% | 81.3% | 59.4% |
| Black | 0.6% | 1.4% | 12.2% |
| Asian | 0.0% | 4.2% | 5.6% |
| Native American | 0.2% | 0.5% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.4% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 0.1% | 3.5% | 3.2% |
| Hispanic | 0.0% | 8.6% | 18.4% |
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| Marriage & Family | | | |
| | Conway Springs, KS | Andover, KS | United States |
| Married Population | 42.6% | 67.3% | 49.8% |
| Currently Married | 42.3% | 67.1% | 48.0% |
| Married but Separated | 0.3% | 0.2% | 1.8% |
| Single Population | 57.4% | 32.7% | 50.2% |
| Never Married | 36.1% | 19.1% | 33.8% |
| Divorced | 12.3% | 10.1% | 10.8% |
| Widowed | 9.0% | 3.5% | 5.6% |
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| Household Size | 2.70 | 3.06 | 2.60 |
| Households | 533 | 4,933 | 124,010,992 |
| Family Households | 321 | 4,024 | 80,755,759 |
| Married couple, w/children | 33.0% | 53.5% | 30.5% |
| Married couple, no children | 35.2% | 34.6% | 42.9% |
| Non Family Households | 212 | 909 | 43,255,233 |
| Single householder, w/children | 21.2% | 8.5% | 15.8% |
| Single householder, no children | 10.6% | 3.4% | 10.8% |