| | Lykens, PA | Gratz, PA | United States |
| Population | 1,616 | 729 | 329,725,481 |
| Female Population | 44.3% | 40.1% | 50.5% |
| Male Population | 55.7% | 60.0% | 49.5% |
| Median Age | 43.6 | 52.1 | 38.4 |
| space3 | | | |
| Population - 2010 | 1,781 | 761 | 309,327,143 |
| Population - 2000 | 1,937 | 676 | 285,036,114 |
| Population - 1990 | 1,986 | 696 | 251,960,433 |
| Pop. 2000 to Now | -8.6% | 11.8% | 15.6% |
| Pop. 1990 to Now | -10.8% | 8.6% | 30.8% |
| space4 | | | |
| Population Density | 1,324.6 | 247.2 | 93.4 |
| Land Area | 1.2 | 2.9 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Lykens, PA | Gratz, PA | United States |
| Age 0 to 4 | 4.2% | 7.0% | 5.9% |
| Age 5 to 9 | 7.0% | 3.4% | 6.1% |
| Age 10 to 14 | 6.6% | 2.7% | 6.6% |
| Age 15 to 17 | 3.7% | 2.3% | 3.9% |
| Age 18 to 20 | 1.3% | 3.3% | 4.0% |
| Age 21 to 24 | 3.3% | 3.8% | 5.2% |
| Age 25 to 34 | 7.9% | 12.1% | 13.8% |
| Age 35 to 44 | 24.4% | 6.4% | 12.9% |
| Age 45 to 54 | 9.2% | 31.3% | 12.6% |
| Age 55 to 59 | 6.4% | 5.6% | 6.7% |
| Age 60 to 64 | 10.4% | 7.0% | 6.3% |
| Age 65 to 74 | 7.4% | 7.4% | 9.6% |
| Age 75 to 84 | 5.6% | 4.0% | 4.5% |
| Age 85 and over | 2.7% | 3.6% | 1.9% |
| space1 | | | |
| Race | | | |
| | Lykens, PA | Gratz, PA | United States |
| White | 83.0% | 74.6% | 59.4% |
| Black | 0.6% | 1.5% | 12.2% |
| Asian | 2.6% | 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 | 12.8% | 0.1% | 3.2% |
| Hispanic | 1.0% | 23.7% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Lykens, PA | Gratz, PA | United States |
| Married Population | 49.5% | 40.6% | 49.8% |
| Currently Married | 48.0% | 37.9% | 48.0% |
| Married but Separated | 1.4% | 2.7% | 1.8% |
| Single Population | 50.5% | 59.4% | 50.2% |
| Never Married | 33.7% | 26.7% | 33.8% |
| Divorced | 12.6% | 25.1% | 10.8% |
| Widowed | 4.2% | 7.6% | 5.6% |
| space5 | | | |
| Household Size | 2.25 | 1.86 | 2.60 |
| Households | 717 | 391 | 124,010,992 |
| Family Households | 399 | 172 | 80,755,759 |
| Married couple, w/children | 25.8% | 14.5% | 30.5% |
| Married couple, no children | 48.4% | 57.6% | 42.9% |
| Non Family Households | 318 | 219 | 43,255,233 |
| Single householder, w/children | 15.3% | 22.1% | 15.8% |
| Single householder, no children | 10.5% | 5.8% | 10.8% |