| | Oklahoma, PA | Hanover, MA | United States |
| Population | 956 | 14,742 | 329,725,481 |
| Female Population | 50.6% | 50.7% | 50.5% |
| Male Population | 49.4% | 49.3% | 49.5% |
| Median Age | 52.2 | 40.9 | 38.4 |
| space3 | | | |
| Population - 2010 | 790 | 13,896 | 309,327,143 |
| Population - 2000 | 915 | 13,164 | 285,036,114 |
| Population - 1990 | 977 | 11,912 | 251,960,433 |
| Pop. 2000 to Now | -19.2% | 11.1% | 15.6% |
| Pop. 1990 to Now | -24.4% | 22.8% | 30.8% |
| space4 | | | |
| Population Density | 1,575.0 | 944.5 | 93.4 |
| Land Area | 0.6 | 15.6 | 3,531,905.4 |
| Water Area | 0.0 | 0.1 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Oklahoma, PA | Hanover, MA | United States |
| Age 0 to 4 | 3.0% | 6.6% | 5.9% |
| Age 5 to 9 | 5.2% | 5.8% | 6.1% |
| Age 10 to 14 | 3.0% | 7.4% | 6.6% |
| Age 15 to 17 | 2.5% | 6.4% | 3.9% |
| Age 18 to 20 | 2.2% | 5.7% | 4.0% |
| Age 21 to 24 | 5.5% | 4.6% | 5.2% |
| Age 25 to 34 | 17.3% | 7.5% | 13.8% |
| Age 35 to 44 | 4.0% | 12.1% | 12.9% |
| Age 45 to 54 | 10.4% | 18.0% | 12.6% |
| Age 55 to 59 | 9.1% | 6.7% | 6.7% |
| Age 60 to 64 | 15.8% | 4.3% | 6.3% |
| Age 65 to 74 | 14.3% | 8.4% | 9.6% |
| Age 75 to 84 | 6.5% | 5.0% | 4.5% |
| Age 85 and over | 1.2% | 1.6% | 1.9% |
| space1 | | | |
| Race | | | |
| | Oklahoma, PA | Hanover, MA | United States |
| White | 91.9% | 95.7% | 59.4% |
| Black | 0.5% | 0.4% | 12.2% |
| Asian | 0.0% | 0.5% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.1% | 0.4% |
| Two or More Races | 2.4% | 1.9% | 3.2% |
| Hispanic | 5.1% | 1.3% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Oklahoma, PA | Hanover, MA | United States |
| Married Population | 58.1% | 61.4% | 49.8% |
| Currently Married | 56.6% | 59.9% | 48.0% |
| Married but Separated | 1.5% | 1.6% | 1.8% |
| Single Population | 41.9% | 38.6% | 50.2% |
| Never Married | 28.8% | 29.1% | 33.8% |
| Divorced | 5.8% | 4.5% | 10.8% |
| Widowed | 7.3% | 5.0% | 5.6% |
| space5 | | | |
| Household Size | 2.27 | 3.08 | 2.60 |
| Households | 421 | 4,744 | 124,010,992 |
| Family Households | 290 | 3,937 | 80,755,759 |
| Married couple, w/children | 17.6% | 45.9% | 30.5% |
| Married couple, no children | 63.1% | 39.4% | 42.9% |
| Non Family Households | 131 | 807 | 43,255,233 |
| Single householder, w/children | 9.0% | 5.9% | 15.8% |
| Single householder, no children | 10.3% | 8.8% | 10.8% |