Allison is a CDP located in Fayette County, Pennsylvania. Allison has a 2026 population of 432. Allison is currently declining at a rate of -2.7% annually and its population has decreased by 0% since the most recent census, which recorded a population of 0 in 2020.
The median age in Allison is 53.3 years: 54 years for males, and 39.6 years for females. For every 100 females there are 67.5 males.
Data after 2023 is projected based on recent change
Overall: 53.3 years
Female: 39.6 years
Male: 54 years
There are 472 adults, (123 of whom are seniors) in Allison.
Female: 342 (59.7%)
Male: 231 (40.3%)
The racial composition of Allison includes 79.41% White, 8.9% Black or African American, and smaller percentages for and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 455 | 79.41% |
| Two or more races | 67 | 11.69% |
| Black or African American | 51 | 8.9% |