Allison is located in Butler County, Iowa. Allison has a 2025 population of 161 . It is also the county seat of Butler County . Allison is currently declining at a rate of 0% annually and its population has decreased by 0% since the most recent census, which recorded a population of 0 in 2020.
The average household income in Allison is $179,095 with a poverty rate of 0%. The median age in Allison is 41.8 years: 51.5 years for males, and 39.1 years for females. For every 100 females there are 71.3 males.
Data after 2023 is projected based on recent change
The racial composition of Allison includes 100% White, and smaller percentages for and multiracial populations.
White (100%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 161 | 100% |
Married
Widowed
Divorced
Separated
Never Married
Allison's average per capita income is $53,839. Household income levels show a median of $160,795. The poverty rate stands at 0%.
Name | Median | Mean |
|---|---|---|
| Households | $160,795 | $179,095 |
| Families | - | $183,078 |
| Married Families | - | - |
| Non Families | - | - |
Average Income
Median Household Income
Poverty Rate