| | Marysville, PA | Enola, PA | United States |
| Population | 2,639 | 6,030 | 329,725,481 |
| Female Population | 52.2% | 51.2% | 50.5% |
| Male Population | 47.8% | 48.8% | 49.5% |
| Median Age | 39.8 | 37.1 | 38.4 |
| space3 | | | |
| Population - 2010 | 2,533 | 6,584 | 309,327,143 |
| Population - 2000 | 2,306 | 5,627 | 285,036,114 |
| Population - 1990 | 2,425 | 5,961 | 251,960,433 |
| Pop. 2000 to Now | 10.7% | 17.0% | 15.6% |
| Pop. 1990 to Now | 5.3% | 10.4% | 30.8% |
| space4 | | | |
| Population Density | 1,130.2 | 3,747.7 | 93.4 |
| Land Area | 2.3 | 1.6 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Marysville, PA | Enola, PA | United States |
| Age 0 to 4 | 4.8% | 4.1% | 5.9% |
| Age 5 to 9 | 6.6% | 3.7% | 6.1% |
| Age 10 to 14 | 5.8% | 5.9% | 6.6% |
| Age 15 to 17 | 5.3% | 3.2% | 3.9% |
| Age 18 to 20 | 0.4% | 8.8% | 4.0% |
| Age 21 to 24 | 4.1% | 5.9% | 5.2% |
| Age 25 to 34 | 17.7% | 14.6% | 13.8% |
| Age 35 to 44 | 11.3% | 13.4% | 12.9% |
| Age 45 to 54 | 16.5% | 15.1% | 12.6% |
| Age 55 to 59 | 6.3% | 7.8% | 6.7% |
| Age 60 to 64 | 5.0% | 3.6% | 6.3% |
| Age 65 to 74 | 11.0% | 8.8% | 9.6% |
| Age 75 to 84 | 4.1% | 4.6% | 4.5% |
| Age 85 and over | 1.1% | 0.4% | 1.9% |
| space1 | | | |
| Race | | | |
| | Marysville, PA | Enola, PA | United States |
| White | 92.6% | 83.3% | 59.4% |
| Black | 0.9% | 8.5% | 12.2% |
| Asian | 0.4% | 0.8% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 1.2% | 0.2% | 0.4% |
| Two or More Races | 0.8% | 1.2% | 3.2% |
| Hispanic | 4.1% | 6.0% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Marysville, PA | Enola, PA | United States |
| Married Population | 49.9% | 41.9% | 49.8% |
| Currently Married | 46.5% | 39.0% | 48.0% |
| Married but Separated | 3.4% | 2.8% | 1.8% |
| Single Population | 50.1% | 58.1% | 50.2% |
| Never Married | 30.3% | 38.9% | 33.8% |
| Divorced | 12.4% | 14.6% | 10.8% |
| Widowed | 7.3% | 4.6% | 5.6% |
| space5 | | | |
| Household Size | 2.28 | 2.29 | 2.60 |
| Households | 1,158 | 2,511 | 124,010,992 |
| Family Households | 679 | 1,317 | 80,755,759 |
| Married couple, w/children | 20.8% | 35.0% | 30.5% |
| Married couple, no children | 50.1% | 39.0% | 42.9% |
| Non Family Households | 479 | 1,194 | 43,255,233 |
| Single householder, w/children | 21.1% | 12.5% | 15.8% |
| Single householder, no children | 8.1% | 13.4% | 10.8% |