| | Williamsport, PA | Pembroke Pines, FL | United States |
| Population | 27,908 | 170,346 | 329,725,481 |
| Female Population | 49.5% | 52.1% | 50.5% |
| Male Population | 50.5% | 47.9% | 49.5% |
| Median Age | 31 | 42.3 | 38.4 |
| space3 | | | |
| Population - 2010 | 29,392 | 155,267 | 309,327,143 |
| Population - 2000 | 30,706 | 137,427 | 285,036,114 |
| Population - 1990 | 31,933 | 65,452 | 251,960,433 |
| Pop. 2000 to Now | -8.3% | 26.9% | 15.6% |
| Pop. 1990 to Now | -11.8% | 166.5% | 30.8% |
| space4 | | | |
| Population Density | 3,196.4 | 5,193.3 | 93.4 |
| Land Area | 8.7 | 32.8 | 3,531,905.4 |
| Water Area | 0.7 | 2.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Williamsport, PA | Pembroke Pines, FL | United States |
| Age 0 to 4 | 5.5% | 4.9% | 5.9% |
| Age 5 to 9 | 6.2% | 5.2% | 6.1% |
| Age 10 to 14 | 5.0% | 6.6% | 6.6% |
| Age 15 to 17 | 3.6% | 3.7% | 3.9% |
| Age 18 to 20 | 11.6% | 3.7% | 4.0% |
| Age 21 to 24 | 7.8% | 4.5% | 5.2% |
| Age 25 to 34 | 15.6% | 11.8% | 13.8% |
| Age 35 to 44 | 10.0% | 13.6% | 12.9% |
| Age 45 to 54 | 10.5% | 14.0% | 12.6% |
| Age 55 to 59 | 6.4% | 6.9% | 6.7% |
| Age 60 to 64 | 4.7% | 7.3% | 6.3% |
| Age 65 to 74 | 8.1% | 9.9% | 9.6% |
| Age 75 to 84 | 3.6% | 5.0% | 4.5% |
| Age 85 and over | 1.4% | 2.9% | 1.9% |
| space1 | | | |
| Race | | | |
| | Williamsport, PA | Pembroke Pines, FL | United States |
| White | 77.0% | 24.9% | 59.4% |
| Black | 14.3% | 21.3% | 12.2% |
| Asian | 1.4% | 4.8% | 5.6% |
| Native American | 0.3% | 0.3% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.1% | 0.2% |
| Other | 0.1% | 0.5% | 0.4% |
| Two or More Races | 4.4% | 2.9% | 3.2% |
| Hispanic | 2.4% | 45.1% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Williamsport, PA | Pembroke Pines, FL | United States |
| Married Population | 32.9% | 50.3% | 49.8% |
| Currently Married | 29.7% | 47.8% | 48.0% |
| Married but Separated | 3.2% | 2.5% | 1.8% |
| Single Population | 67.1% | 49.7% | 50.2% |
| Never Married | 51.2% | 32.0% | 33.8% |
| Divorced | 11.0% | 12.2% | 10.8% |
| Widowed | 4.9% | 5.5% | 5.6% |
| space5 | | | |
| Household Size | 2.22 | 2.74 | 2.60 |
| Households | 11,017 | 61,862 | 124,010,992 |
| Family Households | 5,822 | 42,111 | 80,755,759 |
| Married couple, w/children | 19.2% | 29.4% | 30.5% |
| Married couple, no children | 37.2% | 43.3% | 42.9% |
| Non Family Households | 5,195 | 19,751 | 43,255,233 |
| Single householder, w/children | 30.6% | 14.6% | 15.8% |
| Single householder, no children | 13.0% | 12.8% | 10.8% |