Greenbrier is located in Greene County, Iowa. Greenbrier has a 2025 population of 247 . Greenbrier 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 Greenbrier is $51,687 with a poverty rate of 54.66%. The median age in Greenbrier is 41.8 years: 41.8 years for males, and 39 years for females. For every 100 females there are 183.9 males.
Data after 2023 is projected based on recent change
The racial composition of Greenbrier includes 90.69% White, and smaller percentages for and multiracial populations.
White (90.69%)
Two or more races (9.31%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 224 | 90.69% |
| Two or more races | 23 | 9.31% |
Married
Widowed
Divorced
Separated
Never Married
Greenbrier's average per capita income is $43,482. Household income levels show a median of $52,723. The poverty rate stands at 54.66%.
Name | Median | Mean |
|---|---|---|
| Households | $52,723 | $51,687 |
| Families | $46,364 | $53,624 |
| Married Families | - | - |
| Non Families | - | - |
Average Income
Median Household Income
Poverty Rate