| | Basehor, KS | Olathe, KS | United States |
| Population | 6,717 | 140,339 | 329,725,481 |
| Female Population | 47.5% | 50.2% | 50.5% |
| Male Population | 52.6% | 49.8% | 49.5% |
| Median Age | 39.4 | 35.9 | 38.4 |
| space3 | | | |
| Population - 2010 | 4,662 | 126,253 | 309,327,143 |
| Population - 2000 | 2,238 | 92,962 | 285,036,114 |
| Population - 1990 | 1,591 | 63,352 | 251,960,433 |
| Pop. 2000 to Now | 197.4% | 52.4% | 15.6% |
| Pop. 1990 to Now | 318.4% | 123.6% | 30.8% |
| space4 | | | |
| Population Density | 1,001.8 | 2,277.3 | 93.4 |
| Land Area | 6.7 | 61.6 | 3,531,905.4 |
| Water Area | 0.1 | 0.8 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Basehor, KS | Olathe, KS | United States |
| Age 0 to 4 | 5.7% | 6.5% | 5.9% |
| Age 5 to 9 | 7.9% | 8.3% | 6.1% |
| Age 10 to 14 | 8.2% | 8.0% | 6.6% |
| Age 15 to 17 | 4.4% | 4.8% | 3.9% |
| Age 18 to 20 | 2.7% | 3.5% | 4.0% |
| Age 21 to 24 | 4.6% | 4.2% | 5.2% |
| Age 25 to 34 | 11.0% | 12.9% | 13.8% |
| Age 35 to 44 | 15.7% | 15.9% | 12.9% |
| Age 45 to 54 | 12.9% | 13.5% | 12.6% |
| Age 55 to 59 | 6.6% | 5.8% | 6.7% |
| Age 60 to 64 | 4.1% | 4.7% | 6.3% |
| Age 65 to 74 | 7.2% | 7.5% | 9.6% |
| Age 75 to 84 | 3.3% | 3.2% | 4.5% |
| Age 85 and over | 5.8% | 1.2% | 1.9% |
| space1 | | | |
| Race | | | |
| | Basehor, KS | Olathe, KS | United States |
| White | 94.3% | 74.9% | 59.4% |
| Black | 1.0% | 5.8% | 12.2% |
| Asian | 0.3% | 4.2% | 5.6% |
| Native American | 0.0% | 0.2% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.4% | 0.4% |
| Two or More Races | 2.5% | 3.2% | 3.2% |
| Hispanic | 1.9% | 11.3% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Basehor, KS | Olathe, KS | United States |
| Married Population | 61.0% | 59.4% | 49.8% |
| Currently Married | 60.2% | 58.4% | 48.0% |
| Married but Separated | 0.8% | 1.0% | 1.8% |
| Single Population | 39.0% | 40.6% | 50.2% |
| Never Married | 23.2% | 27.3% | 33.8% |
| Divorced | 11.0% | 9.7% | 10.8% |
| Widowed | 4.7% | 3.6% | 5.6% |
| space5 | | | |
| Household Size | 2.70 | 2.77 | 2.60 |
| Households | 2,484 | 50,141 | 124,010,992 |
| Family Households | 1,742 | 37,203 | 80,755,759 |
| Married couple, w/children | 34.5% | 40.9% | 30.5% |
| Married couple, no children | 51.9% | 40.3% | 42.9% |
| Non Family Households | 742 | 12,938 | 43,255,233 |
| Single householder, w/children | 10.5% | 12.3% | 15.8% |
| Single householder, no children | 3.1% | 6.4% | 10.8% |