Mifflinburg is a borough located in Union County, Pennsylvania. Mifflinburg has a 2025 population of 3,467 . Mifflinburg is currently declining at a rate of -0.09% annually and its population has decreased by -0.43% since the most recent census, which recorded a population of 3,482 in 2020.
The average household income in Mifflinburg is $75,758 with a poverty rate of 3.47%. The median age in Mifflinburg is 37.9 years: 32.1 years for males, and 46.7 years for females. For every 100 females there are 116.4 males.
Data after 2023 is projected based on recent change
The racial composition of Mifflinburg includes 92.93% White, 4.04% other race, and smaller percentages for Two or more races, Black or African American and multiracial populations.
White (92.93%)
Other race (4.04%)
Two or more races (2.92%)
Black or African American (0.12%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 3,219 | 92.93% |
| Other race | 140 | 4.04% |
| Two or more races | 101 | 2.92% |
| Black or African American | 4 | 0.12% |
Married
Widowed
Divorced
Separated
Never Married
Mifflinburg's average per capita income is $41,635. Household income levels show a median of $65,643. The poverty rate stands at 3.47%.
Name | Median | Mean |
|---|---|---|
| Married Families | $106,150 | - |
| Families | $87,917 | $94,776 |
| Households | $65,643 | $75,758 |
| Non Families | $34,837 | $40,566 |
Average Income
Median Household Income
Poverty Rate