| | Akron, PA | Mount Gretna, PA | United States |
| Population | 4,132 | 171 | 329,725,481 |
| Female Population | 50.5% | 48.5% | 50.5% |
| Male Population | 49.5% | 51.5% | 49.5% |
| Median Age | 42 | 65.9 | 38.4 |
| space3 | | | |
| Population - 2010 | 3,890 | 198 | 309,327,143 |
| Population - 2000 | 4,046 | 242 | 285,036,114 |
| Population - 1990 | 3,869 | 303 | 251,960,433 |
| Pop. 2000 to Now | -1.3% | -13.6% | 15.6% |
| Pop. 1990 to Now | 3.2% | -31.0% | 30.8% |
| space4 | | | |
| Population Density | 3,367.6 | 1,187.5 | 93.4 |
| Land Area | 1.2 | 0.1 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Akron, PA | Mount Gretna, PA | United States |
| Age 0 to 4 | 7.0% | 0.0% | 5.9% |
| Age 5 to 9 | 6.4% | 2.3% | 6.1% |
| Age 10 to 14 | 5.7% | 6.4% | 6.6% |
| Age 15 to 17 | 4.9% | 0.0% | 3.9% |
| Age 18 to 20 | 1.4% | 0.0% | 4.0% |
| Age 21 to 24 | 2.6% | 1.8% | 5.2% |
| Age 25 to 34 | 14.0% | 0.0% | 13.8% |
| Age 35 to 44 | 11.2% | 2.9% | 12.9% |
| Age 45 to 54 | 5.7% | 12.9% | 12.6% |
| Age 55 to 59 | 12.0% | 17.5% | 6.7% |
| Age 60 to 64 | 8.3% | 3.5% | 6.3% |
| Age 65 to 74 | 13.6% | 35.7% | 9.6% |
| Age 75 to 84 | 6.2% | 8.2% | 4.5% |
| Age 85 and over | 1.1% | 8.8% | 1.9% |
| space1 | | | |
| Race | | | |
| | Akron, PA | Mount Gretna, PA | United States |
| White | 89.9% | 100.0% | 59.4% |
| Black | 0.7% | 0.0% | 12.2% |
| Asian | 1.8% | 0.0% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 0.8% | 0.0% | 3.2% |
| Hispanic | 6.8% | 0.0% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Akron, PA | Mount Gretna, PA | United States |
| Married Population | 54.1% | 77.6% | 49.8% |
| Currently Married | 52.8% | 75.6% | 48.0% |
| Married but Separated | 1.3% | 1.9% | 1.8% |
| Single Population | 45.9% | 22.4% | 50.2% |
| Never Married | 27.6% | 10.9% | 33.8% |
| Divorced | 13.9% | 6.4% | 10.8% |
| Widowed | 4.4% | 5.1% | 5.6% |
| space5 | | | |
| Household Size | 2.45 | 2.09 | 2.60 |
| Households | 1,685 | 82 | 124,010,992 |
| Family Households | 1,123 | 64 | 80,755,759 |
| Married couple, w/children | 26.4% | 6.3% | 30.5% |
| Married couple, no children | 48.3% | 87.5% | 42.9% |
| Non Family Households | 562 | 18 | 43,255,233 |
| Single householder, w/children | 16.7% | 4.7% | 15.8% |
| Single householder, no children | 8.6% | 1.6% | 10.8% |