| | Littlestown, PA | Zeeland, MI | United States |
| Population | 4,730 | 5,701 | 329,725,481 |
| Female Population | 50.8% | 51.5% | 50.5% |
| Male Population | 49.2% | 48.5% | 49.5% |
| Median Age | 36.6 | 42.8 | 38.4 |
| space3 | | | |
| Population - 2010 | 4,436 | 5,503 | 309,327,143 |
| Population - 2000 | 3,947 | 5,805 | 285,036,114 |
| Population - 1990 | 2,974 | 5,417 | 251,960,433 |
| Pop. 2000 to Now | 14.0% | -4.9% | 15.6% |
| Pop. 1990 to Now | 51.2% | 1.9% | 30.8% |
| space4 | | | |
| Population Density | 3,147.0 | 1,906.1 | 93.4 |
| Land Area | 1.5 | 3.0 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Littlestown, PA | Zeeland, MI | United States |
| Age 0 to 4 | 6.2% | 6.2% | 5.9% |
| Age 5 to 9 | 9.2% | 6.3% | 6.1% |
| Age 10 to 14 | 5.5% | 5.8% | 6.6% |
| Age 15 to 17 | 5.8% | 3.6% | 3.9% |
| Age 18 to 20 | 4.9% | 3.4% | 4.0% |
| Age 21 to 24 | 2.2% | 5.7% | 5.2% |
| Age 25 to 34 | 14.1% | 11.6% | 13.8% |
| Age 35 to 44 | 10.9% | 8.5% | 12.9% |
| Age 45 to 54 | 12.0% | 13.7% | 12.6% |
| Age 55 to 59 | 7.7% | 4.8% | 6.7% |
| Age 60 to 64 | 6.9% | 5.5% | 6.3% |
| Age 65 to 74 | 9.4% | 10.0% | 9.6% |
| Age 75 to 84 | 4.3% | 6.0% | 4.5% |
| Age 85 and over | 0.9% | 8.8% | 1.9% |
| space1 | | | |
| Race | | | |
| | Littlestown, PA | Zeeland, MI | United States |
| White | 92.0% | 87.8% | 59.4% |
| Black | 1.4% | 0.8% | 12.2% |
| Asian | 0.3% | 0.2% | 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 | 1.6% | 1.2% | 3.2% |
| Hispanic | 4.7% | 10.0% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Littlestown, PA | Zeeland, MI | United States |
| Married Population | 53.6% | 50.4% | 49.8% |
| Currently Married | 51.3% | 50.4% | 48.0% |
| Married but Separated | 2.3% | 0.0% | 1.8% |
| Single Population | 46.4% | 49.6% | 50.2% |
| Never Married | 24.6% | 21.6% | 33.8% |
| Divorced | 18.2% | 17.4% | 10.8% |
| Widowed | 3.6% | 10.5% | 5.6% |
| space5 | | | |
| Household Size | 2.55 | 2.17 | 2.60 |
| Households | 1,853 | 2,550 | 124,010,992 |
| Family Households | 1,185 | 1,550 | 80,755,759 |
| Married couple, w/children | 35.6% | 23.6% | 30.5% |
| Married couple, no children | 38.3% | 47.9% | 42.9% |
| Non Family Households | 668 | 1,000 | 43,255,233 |
| Single householder, w/children | 18.7% | 21.5% | 15.8% |
| Single householder, no children | 7.3% | 7.0% | 10.8% |