| | Porum, OK | Fairbury, NE | United States |
| Population | 821 | 3,916 | 329,725,481 |
| Female Population | 47.5% | 54.5% | 50.5% |
| Male Population | 52.5% | 45.5% | 49.5% |
| Median Age | 26.1 | 38.9 | 38.4 |
| space3 | | | |
| Population - 2010 | 728 | 3,926 | 309,327,143 |
| Population - 2000 | 725 | 4,262 | 285,036,114 |
| Population - 1990 | 851 | 4,335 | 251,960,433 |
| Pop. 2000 to Now | -3.6% | -14.5% | 15.6% |
| Pop. 1990 to Now | -17.9% | -15.9% | 30.8% |
| space4 | | | |
| Population Density | 980.9 | 1,550.3 | 93.4 |
| Land Area | 0.8 | 2.5 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Porum, OK | Fairbury, NE | United States |
| Age 0 to 4 | 17.3% | 6.4% | 5.9% |
| Age 5 to 9 | 12.3% | 7.5% | 6.1% |
| Age 10 to 14 | 8.9% | 4.0% | 6.6% |
| Age 15 to 17 | 2.9% | 4.3% | 3.9% |
| Age 18 to 20 | 3.0% | 1.4% | 4.0% |
| Age 21 to 24 | 4.1% | 6.6% | 5.2% |
| Age 25 to 34 | 16.4% | 12.9% | 13.8% |
| Age 35 to 44 | 12.5% | 11.1% | 12.9% |
| Age 45 to 54 | 5.4% | 12.0% | 12.6% |
| Age 55 to 59 | 4.0% | 6.5% | 6.7% |
| Age 60 to 64 | 4.5% | 9.0% | 6.3% |
| Age 65 to 74 | 4.5% | 10.1% | 9.6% |
| Age 75 to 84 | 3.8% | 5.1% | 4.5% |
| Age 85 and over | 0.2% | 3.3% | 1.9% |
| space1 | | | |
| Race | | | |
| | Porum, OK | Fairbury, NE | United States |
| White | 66.1% | 88.0% | 59.4% |
| Black | 0.0% | 1.1% | 12.2% |
| Asian | 0.0% | 0.5% | 5.6% |
| Native American | 14.3% | 0.1% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 19.1% | 2.7% | 3.2% |
| Hispanic | 0.5% | 7.7% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Porum, OK | Fairbury, NE | United States |
| Married Population | 47.3% | 47.4% | 49.8% |
| Currently Married | 45.0% | 46.0% | 48.0% |
| Married but Separated | 2.4% | 1.4% | 1.8% |
| Single Population | 52.7% | 52.6% | 50.2% |
| Never Married | 32.1% | 29.9% | 33.8% |
| Divorced | 12.9% | 15.5% | 10.8% |
| Widowed | 7.7% | 7.3% | 5.6% |
| space5 | | | |
| Household Size | 3.09 | 2.32 | 2.60 |
| Households | 266 | 1,646 | 124,010,992 |
| Family Households | 208 | 883 | 80,755,759 |
| Married couple, w/children | 34.6% | 25.8% | 30.5% |
| Married couple, no children | 20.2% | 52.1% | 42.9% |
| Non Family Households | 58 | 763 | 43,255,233 |
| Single householder, w/children | 41.3% | 17.2% | 15.8% |
| Single householder, no children | 3.8% | 4.9% | 10.8% |