| | Bentonville, AR | Lafayette, IN | United States |
| Population | 52,565 | 70,928 | 329,725,481 |
| Female Population | 47.9% | 50.1% | 50.5% |
| Male Population | 52.1% | 49.9% | 49.5% |
| Median Age | 32.2 | 32.5 | 38.4 |
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| Population - 2010 | 35,848 | 68,926 | 309,327,143 |
| Population - 2000 | 19,730 | 56,397 | 285,036,114 |
| Population - 1990 | 11,257 | 43,764 | 251,960,433 |
| Pop. 2000 to Now | 191.6% | 26.8% | 15.6% |
| Pop. 1990 to Now | 411.1% | 63.3% | 30.8% |
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| Population Density | 1,582.1 | 2,414.3 | 93.4 |
| Land Area | 33.2 | 29.4 | 3,531,905.4 |
| Water Area | 0.2 | 0.1 | 264,836.8 |
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| Est. Total Population By Age | | | |
| | Bentonville, AR | Lafayette, IN | United States |
| Age 0 to 4 | 7.9% | 7.8% | 5.9% |
| Age 5 to 9 | 9.1% | 6.3% | 6.1% |
| Age 10 to 14 | 7.3% | 6.1% | 6.6% |
| Age 15 to 17 | 4.2% | 3.2% | 3.9% |
| Age 18 to 20 | 2.9% | 3.3% | 4.0% |
| Age 21 to 24 | 4.9% | 9.2% | 5.2% |
| Age 25 to 34 | 18.4% | 18.0% | 13.8% |
| Age 35 to 44 | 17.5% | 13.0% | 12.9% |
| Age 45 to 54 | 11.5% | 9.6% | 12.6% |
| Age 55 to 59 | 4.6% | 4.9% | 6.7% |
| Age 60 to 64 | 3.5% | 5.3% | 6.3% |
| Age 65 to 74 | 4.8% | 7.9% | 9.6% |
| Age 75 to 84 | 2.4% | 3.8% | 4.5% |
| Age 85 and over | 0.9% | 1.5% | 1.9% |
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| Race | | | |
| | Bentonville, AR | Lafayette, IN | United States |
| White | 63.5% | 73.4% | 59.4% |
| Black | 3.3% | 8.7% | 12.2% |
| Asian | 13.3% | 1.8% | 5.6% |
| Native American | 0.6% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.3% | 0.0% | 0.2% |
| Other | 0.4% | 0.5% | 0.4% |
| Two or More Races | 8.2% | 2.5% | 3.2% |
| Hispanic | 10.4% | 13.0% | 18.4% |
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| Marriage & Family | | | |
| | Bentonville, AR | Lafayette, IN | United States |
| Married Population | 56.7% | 42.3% | 49.8% |
| Currently Married | 55.2% | 40.4% | 48.0% |
| Married but Separated | 1.5% | 1.9% | 1.8% |
| Single Population | 43.3% | 57.7% | 50.2% |
| Never Married | 29.8% | 38.0% | 33.8% |
| Divorced | 9.9% | 14.5% | 10.8% |
| Widowed | 3.6% | 5.2% | 5.6% |
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| Household Size | 2.64 | 2.22 | 2.60 |
| Households | 19,573 | 31,362 | 124,010,992 |
| Family Households | 13,171 | 16,889 | 80,755,759 |
| Married couple, w/children | 46.2% | 24.3% | 30.5% |
| Married couple, no children | 34.3% | 39.4% | 42.9% |
| Non Family Households | 6,402 | 14,473 | 43,255,233 |
| Single householder, w/children | 13.6% | 24.5% | 15.8% |
| Single householder, no children | 6.0% | 11.8% | 10.8% |