| | Mohnton, PA | Lampeter, PA | United States |
| Population | 2,934 | 2,008 | 329,725,481 |
| Female Population | 49.2% | 54.3% | 50.5% |
| Male Population | 50.8% | 45.7% | 49.5% |
| Median Age | 41.4 | 34.1 | 38.4 |
| space3 | | | |
| Population - 2010 | 2,999 | 1,541 | 309,327,143 |
| Population - 2000 | 2,963 | 1,174 | 285,036,114 |
| Population - 1990 | 2,484 | 796 | 251,960,433 |
| Pop. 2000 to Now | 1.6% | 9.2% | 15.6% |
| Pop. 1990 to Now | 21.2% | 61.1% | 30.8% |
| space4 | | | |
| Population Density | 3,840.3 | 1,169.5 | 93.4 |
| Land Area | 0.8 | 1.7 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Mohnton, PA | Lampeter, PA | United States |
| Age 0 to 4 | 6.1% | 0.7% | 5.9% |
| Age 5 to 9 | 8.1% | 8.5% | 6.1% |
| Age 10 to 14 | 5.5% | 20.8% | 6.6% |
| Age 15 to 17 | 3.6% | 2.0% | 3.9% |
| Age 18 to 20 | 2.9% | 2.2% | 4.0% |
| Age 21 to 24 | 7.2% | 3.9% | 5.2% |
| Age 25 to 34 | 8.9% | 15.0% | 13.8% |
| Age 35 to 44 | 13.5% | 19.6% | 12.9% |
| Age 45 to 54 | 14.0% | 9.3% | 12.6% |
| Age 55 to 59 | 5.2% | 3.6% | 6.7% |
| Age 60 to 64 | 9.7% | 9.0% | 6.3% |
| Age 65 to 74 | 10.8% | 3.3% | 9.6% |
| Age 75 to 84 | 2.8% | 2.0% | 4.5% |
| Age 85 and over | 1.7% | 0.0% | 1.9% |
| space1 | | | |
| Race | | | |
| | Mohnton, PA | Lampeter, PA | United States |
| White | 84.6% | 89.8% | 59.4% |
| Black | 0.0% | 1.1% | 12.2% |
| Asian | 1.7% | 6.6% | 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 | 1.5% | 2.5% | 3.2% |
| Hispanic | 12.2% | 0.0% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Mohnton, PA | Lampeter, PA | United States |
| Married Population | 56.0% | 56.7% | 49.8% |
| Currently Married | 54.7% | 56.7% | 48.0% |
| Married but Separated | 1.3% | 0.0% | 1.8% |
| Single Population | 44.0% | 43.3% | 50.2% |
| Never Married | 29.2% | 34.8% | 33.8% |
| Divorced | 12.5% | 6.5% | 10.8% |
| Widowed | 2.3% | 2.0% | 5.6% |
| space5 | | | |
| Household Size | 2.55 | 2.62 | 2.60 |
| Households | 1,151 | 767 | 124,010,992 |
| Family Households | 740 | 480 | 80,755,759 |
| Married couple, w/children | 34.9% | 51.7% | 30.5% |
| Married couple, no children | 44.6% | 29.6% | 42.9% |
| Non Family Households | 411 | 287 | 43,255,233 |
| Single householder, w/children | 13.9% | 10.6% | 15.8% |
| Single householder, no children | 6.6% | 8.1% | 10.8% |