Walnut is a city located in Pottawattamie County, Iowa. Walnut has a 2025 population of 724 . Walnut is currently declining at a rate of -0.55% annually and its population has decreased by -2.56% since the most recent census, which recorded a population of 743 in 2020.
The average household income in Walnut is $76,219 with a poverty rate of 9.75%. The median age in Walnut is 66.6 years: 61.1 years for males, and 71.9 years for females. For every 100 females there are 73.9 males.
Data after 2023 is projected based on recent change
The racial composition of Walnut includes 95.15% White, and smaller percentages for Black or African American, other race and multiracial populations.
White (95.15%)
Two or more races (3.73%)
Black or African American (0.67%)
Other race (0.45%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 1,274 | 95.15% |
| Two or more races | 50 | 3.73% |
| Black or African American | 9 | 0.67% |
| Other race | 6 | 0.45% |
Married
Widowed
Divorced
Separated
Never Married
Walnut's average per capita income is $36,550. Household income levels show a median of $65,278. The poverty rate stands at 9.75%.
Name | Median | Mean |
|---|---|---|
| Married Families | $89,432 | - |
| Families | $70,000 | $101,541 |
| Households | $65,278 | $76,219 |
| Non Families | $31,500 | $42,047 |
Average Income
Median Household Income
Poverty Rate