| | Parkville, MO | Pleasanton, KS | United States |
| Population | 7,153 | 1,612 | 329,725,481 |
| Female Population | 46.4% | 57.7% | 50.5% |
| Male Population | 53.6% | 42.3% | 49.5% |
| Median Age | 40.8 | 37.3 | 38.4 |
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| Population - 2010 | 5,547 | 1,204 | 309,327,143 |
| Population - 2000 | 4,059 | 1,387 | 285,036,114 |
| Population - 1990 | 2,402 | 1,231 | 251,960,433 |
| Pop. 2000 to Now | 105.2% | -16.5% | 15.6% |
| Pop. 1990 to Now | 246.8% | -5.9% | 30.8% |
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| Population Density | 483.7 | 773.9 | 93.4 |
| Land Area | 14.8 | 2.1 | 3,531,905.4 |
| Water Area | 0.6 | 0.3 | 264,836.8 |
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| Est. Total Population By Age | | | |
| | Parkville, MO | Pleasanton, KS | United States |
| Age 0 to 4 | 8.6% | 6.3% | 5.9% |
| Age 5 to 9 | 8.0% | 11.2% | 6.1% |
| Age 10 to 14 | 8.2% | 6.5% | 6.6% |
| Age 15 to 17 | 4.6% | 5.5% | 3.9% |
| Age 18 to 20 | 4.5% | 4.2% | 4.0% |
| Age 21 to 24 | 3.1% | 4.7% | 5.2% |
| Age 25 to 34 | 4.0% | 9.2% | 13.8% |
| Age 35 to 44 | 16.1% | 14.5% | 12.9% |
| Age 45 to 54 | 18.0% | 9.2% | 12.6% |
| Age 55 to 59 | 7.2% | 6.1% | 6.7% |
| Age 60 to 64 | 5.2% | 6.3% | 6.3% |
| Age 65 to 74 | 8.4% | 11.8% | 9.6% |
| Age 75 to 84 | 3.7% | 3.7% | 4.5% |
| Age 85 and over | 0.5% | 0.9% | 1.9% |
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| Race | | | |
| | Parkville, MO | Pleasanton, KS | United States |
| White | 82.5% | 94.7% | 59.4% |
| Black | 2.3% | 0.0% | 12.2% |
| Asian | 3.7% | 0.6% | 5.6% |
| Native American | 0.3% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.7% | 0.2% |
| Other | 0.4% | 0.0% | 0.4% |
| Two or More Races | 4.0% | 2.2% | 3.2% |
| Hispanic | 6.8% | 1.8% | 18.4% |
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| Marriage & Family | | | |
| | Parkville, MO | Pleasanton, KS | United States |
| Married Population | 73.2% | 51.9% | 49.8% |
| Currently Married | 72.6% | 48.5% | 48.0% |
| Married but Separated | 0.6% | 3.4% | 1.8% |
| Single Population | 26.8% | 48.1% | 50.2% |
| Never Married | 20.4% | 24.2% | 33.8% |
| Divorced | 5.2% | 15.7% | 10.8% |
| Widowed | 1.2% | 8.2% | 5.6% |
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| Household Size | 2.87 | 2.69 | 2.60 |
| Households | 2,439 | 599 | 124,010,992 |
| Family Households | 1,966 | 342 | 80,755,759 |
| Married couple, w/children | 53.9% | 40.6% | 30.5% |
| Married couple, no children | 44.1% | 34.2% | 42.9% |
| Non Family Households | 473 | 257 | 43,255,233 |
| Single householder, w/children | 1.2% | 13.7% | 15.8% |
| Single householder, no children | 0.8% | 11.4% | 10.8% |