| | Buffalo, TX | Spicer, MN | United States |
| Population | 1,719 | 1,217 | 329,725,481 |
| Female Population | 57.5% | 45.3% | 50.5% |
| Male Population | 42.5% | 54.7% | 49.5% |
| Median Age | 38.1 | 47 | 38.4 |
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| Population - 2010 | 1,855 | 1,184 | 309,327,143 |
| Population - 2000 | 1,804 | 1,126 | 285,036,114 |
| Population - 1990 | 1,555 | 1,020 | 251,960,433 |
| Pop. 2000 to Now | 5.9% | 8.7% | 15.6% |
| Pop. 1990 to Now | 22.8% | 20.0% | 30.8% |
| space4 | | | |
| Population Density | 365.0 | 1,027.9 | 93.4 |
| Land Area | 4.7 | 1.2 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Buffalo, TX | Spicer, MN | United States |
| Age 0 to 4 | 10.5% | 3.3% | 5.9% |
| Age 5 to 9 | 4.7% | 5.7% | 6.1% |
| Age 10 to 14 | 7.8% | 6.3% | 6.6% |
| Age 15 to 17 | 3.4% | 4.5% | 3.9% |
| Age 18 to 20 | 3.2% | 3.0% | 4.0% |
| Age 21 to 24 | 6.0% | 4.8% | 5.2% |
| Age 25 to 34 | 11.8% | 8.7% | 13.8% |
| Age 35 to 44 | 16.2% | 13.1% | 12.9% |
| Age 45 to 54 | 6.9% | 11.7% | 12.6% |
| Age 55 to 59 | 7.6% | 9.1% | 6.7% |
| Age 60 to 64 | 5.8% | 13.1% | 6.3% |
| Age 65 to 74 | 9.2% | 6.2% | 9.6% |
| Age 75 to 84 | 1.3% | 4.8% | 4.5% |
| Age 85 and over | 5.6% | 5.6% | 1.9% |
| space1 | | | |
| Race | | | |
| | Buffalo, TX | Spicer, MN | United States |
| White | 65.7% | 82.0% | 59.4% |
| Black | 10.6% | 2.0% | 12.2% |
| Asian | 0.7% | 0.0% | 5.6% |
| Native American | 0.2% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 4.1% | 6.3% | 3.2% |
| Hispanic | 18.7% | 9.7% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Buffalo, TX | Spicer, MN | United States |
| Married Population | 44.2% | 47.7% | 49.8% |
| Currently Married | 41.4% | 47.7% | 48.0% |
| Married but Separated | 2.8% | 0.0% | 1.8% |
| Single Population | 55.8% | 52.3% | 50.2% |
| Never Married | 29.5% | 35.1% | 33.8% |
| Divorced | 17.7% | 8.2% | 10.8% |
| Widowed | 8.6% | 8.9% | 5.6% |
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| Household Size | 2.49 | 2.25 | 2.60 |
| Households | 686 | 536 | 124,010,992 |
| Family Households | 398 | 285 | 80,755,759 |
| Married couple, w/children | 32.2% | 31.2% | 30.5% |
| Married couple, no children | 35.9% | 52.6% | 42.9% |
| Non Family Households | 288 | 251 | 43,255,233 |
| Single householder, w/children | 12.1% | 10.9% | 15.8% |
| Single householder, no children | 19.8% | 5.3% | 10.8% |