Buffalo is located in Union County, Pennsylvania. Buffalo has a 2025 population of 3,562. Buffalo is currently declining at a rate of -0.25% annually and its population has decreased by -0.72% since the most recent census, which recorded a population of 3,588 in 2020.
The average household income in Buffalo is $79,333 with a poverty rate of 9.18%. The median age in Buffalo is 35.6 years: 32.6 years for males, and 44.8 years for females.
Data after 2023 is projected based on recent change
The racial composition of Buffalo includes 97.18% White, and smaller percentages for Two or more races, other race, Black or African American and multiracial populations.
White (97.2%)
Two or more races (1.7%)
Other race (0.8%)
Black or African American (0.3%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 3,485 | 97.18% |
| Two or more races | 62 | 1.73% |
| Other race | 29 | 0.81% |
| Black or African American | 10 | 0.28% |
Married
Widowed
Divorced
Separated
Never Married
Buffalo's average per capita income is $37,050. Household income levels show a median of $61,513. The poverty rate stands at 9.18%.
Name | Median | Mean |
|---|---|---|
| Married Families | $88,158 | - |
| Families | $63,993 | $81,685 |
| Households | $61,513 | $79,333 |
| Non Families | $42,472 | $69,766 |
Average Income
Median Household Income
Poverty Rate