| | Westfield, PA | Sayre, PA | United States |
| Population | 1,474 | 5,484 | 329,725,481 |
| Female Population | 51.4% | 53.4% | 50.5% |
| Male Population | 48.6% | 46.6% | 49.5% |
| Median Age | 34.2 | 36.6 | 38.4 |
| space3 | | | |
| Population - 2010 | 1,076 | 5,661 | 309,327,143 |
| Population - 2000 | 1,190 | 5,813 | 285,036,114 |
| Population - 1990 | 1,119 | 5,791 | 251,960,433 |
| Pop. 2000 to Now | -13.7% | -8.2% | 15.6% |
| Pop. 1990 to Now | -8.2% | -7.8% | 30.8% |
| space4 | | | |
| Population Density | 1,322.0 | 2,712.2 | 93.4 |
| Land Area | 1.1 | 2.0 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Westfield, PA | Sayre, PA | United States |
| Age 0 to 4 | 8.1% | 3.8% | 5.9% |
| Age 5 to 9 | 8.5% | 4.7% | 6.1% |
| Age 10 to 14 | 7.6% | 10.0% | 6.6% |
| Age 15 to 17 | 7.6% | 3.7% | 3.9% |
| Age 18 to 20 | 2.7% | 5.5% | 4.0% |
| Age 21 to 24 | 5.6% | 8.0% | 5.2% |
| Age 25 to 34 | 12.0% | 12.4% | 13.8% |
| Age 35 to 44 | 8.5% | 12.6% | 12.9% |
| Age 45 to 54 | 13.4% | 11.4% | 12.6% |
| Age 55 to 59 | 7.9% | 6.0% | 6.7% |
| Age 60 to 64 | 5.8% | 5.5% | 6.3% |
| Age 65 to 74 | 5.3% | 10.1% | 9.6% |
| Age 75 to 84 | 3.9% | 2.3% | 4.5% |
| Age 85 and over | 3.1% | 3.9% | 1.9% |
| space1 | | | |
| Race | | | |
| | Westfield, PA | Sayre, PA | United States |
| White | 96.3% | 92.4% | 59.4% |
| Black | 0.1% | 1.6% | 12.2% |
| Asian | 0.0% | 0.8% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 1.7% | 0.4% |
| Two or More Races | 2.0% | 2.8% | 3.2% |
| Hispanic | 1.6% | 0.7% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Westfield, PA | Sayre, PA | United States |
| Married Population | 43.1% | 37.2% | 49.8% |
| Currently Married | 38.9% | 34.0% | 48.0% |
| Married but Separated | 4.2% | 3.3% | 1.8% |
| Single Population | 56.9% | 62.8% | 50.2% |
| Never Married | 32.7% | 40.9% | 33.8% |
| Divorced | 17.9% | 14.9% | 10.8% |
| Widowed | 6.4% | 6.9% | 5.6% |
| space5 | | | |
| Household Size | 3.05 | 2.27 | 2.60 |
| Households | 480 | 2,377 | 124,010,992 |
| Family Households | 313 | 1,243 | 80,755,759 |
| Married couple, w/children | 31.6% | 23.7% | 30.5% |
| Married couple, no children | 27.8% | 31.2% | 42.9% |
| Non Family Households | 167 | 1,134 | 43,255,233 |
| Single householder, w/children | 25.6% | 22.1% | 15.8% |
| Single householder, no children | 15.0% | 22.9% | 10.8% |