Sumner is a city located in Bremer County, Iowa. Sumner has a 2025 population of 2,032 . Sumner is currently declining at a rate of 0% annually and its population has increased by 0.05% since the most recent census, which recorded a population of 2,031 in 2020.
The average household income in Sumner is $75,896 with a poverty rate of 11.82%. The median age in Sumner is 47.1 years: 45.8 years for males, and 48.6 years for females. For every 100 females there are 86.8 males.
Data after 2023 is projected based on recent change
The racial composition of Sumner includes 95.28% White, and smaller percentages for Two or more races, Black or African American, Native American and multiracial populations.
White (95.28%)
Two or more races (2.69%)
Black or African American (1.39%)
Native American (0.65%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 2,057 | 95.28% |
| Two or more races | 58 | 2.69% |
| Black or African American | 30 | 1.39% |
| Native American | 14 | 0.65% |
Married
Widowed
Divorced
Separated
Never Married
Sumner's average per capita income is $42,264. Household income levels show a median of $56,174. The poverty rate stands at 11.82%.
Name | Median | Mean |
|---|---|---|
| Married Families | $100,893 | - |
| Families | $76,667 | $99,479 |
| Households | $56,174 | $75,896 |
| Non Families | $33,977 | $43,449 |
Average Income
Median Household Income
Poverty Rate