| | Upton, KY | Portland, AR | United States |
| Population | 521 | 457 | 329,725,481 |
| Female Population | 48.9% | 48.4% | 50.5% |
| Male Population | 51.1% | 51.6% | 49.5% |
| Median Age | 45.2 | 41.4 | 38.4 |
| space3 | | | |
| Population - 2010 | 692 | 432 | 309,327,143 |
| Population - 2000 | 654 | 552 | 285,036,114 |
| Population - 1990 | 719 | 560 | 251,960,433 |
| Pop. 2000 to Now | 5.7% | -30.8% | 15.6% |
| Pop. 1990 to Now | -3.9% | -31.8% | 30.8% |
| space4 | | | |
| Population Density | 383.7 | 423.9 | 93.4 |
| Land Area | 1.4 | 1.1 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Upton, KY | Portland, AR | United States |
| Age 0 to 4 | 4.4% | 3.5% | 5.9% |
| Age 5 to 9 | 4.8% | 10.1% | 6.1% |
| Age 10 to 14 | 4.2% | 9.2% | 6.6% |
| Age 15 to 17 | 3.1% | 3.9% | 3.9% |
| Age 18 to 20 | 0.2% | 4.2% | 4.0% |
| Age 21 to 24 | 10.7% | 1.8% | 5.2% |
| Age 25 to 34 | 8.6% | 11.8% | 13.8% |
| Age 35 to 44 | 13.4% | 8.8% | 12.9% |
| Age 45 to 54 | 19.0% | 17.5% | 12.6% |
| Age 55 to 59 | 4.4% | 8.3% | 6.7% |
| Age 60 to 64 | 10.4% | 3.9% | 6.3% |
| Age 65 to 74 | 10.2% | 10.9% | 9.6% |
| Age 75 to 84 | 4.6% | 5.9% | 4.5% |
| Age 85 and over | 1.9% | 0.2% | 1.9% |
| space1 | | | |
| Race | | | |
| | Upton, KY | Portland, AR | United States |
| White | 94.4% | 47.3% | 59.4% |
| Black | 3.3% | 39.2% | 12.2% |
| Asian | 0.0% | 0.0% | 5.6% |
| Native American | 0.2% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 1.7% | 0.0% | 0.4% |
| Two or More Races | 0.4% | 3.3% | 3.2% |
| Hispanic | 0.0% | 10.3% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Upton, KY | Portland, AR | United States |
| Married Population | 65.6% | 51.8% | 49.8% |
| Currently Married | 65.4% | 50.7% | 48.0% |
| Married but Separated | 0.2% | 1.1% | 1.8% |
| Single Population | 34.4% | 48.2% | 50.2% |
| Never Married | 22.0% | 37.4% | 33.8% |
| Divorced | 6.9% | 5.9% | 10.8% |
| Widowed | 5.5% | 4.8% | 5.6% |
| space5 | | | |
| Household Size | 2.42 | 2.86 | 2.60 |
| Households | 215 | 160 | 124,010,992 |
| Family Households | 160 | 111 | 80,755,759 |
| Married couple, w/children | 18.8% | 18.0% | 30.5% |
| Married couple, no children | 63.8% | 57.7% | 42.9% |
| Non Family Households | 55 | 49 | 43,255,233 |
| Single householder, w/children | 15.0% | 15.3% | 15.8% |
| Single householder, no children | 2.5% | 9.0% | 10.8% |