Sumner is located in Bremer County, Iowa. Sumner has a 2025 population of 3,389 . Sumner 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 Sumner is $91,613 with a poverty rate of 3.72%. The median age in Sumner is 38.3 years: 35.9 years for males, and 41.5 years for females. For every 100 females there are 85.1 males.
Data after 2023 is projected based on recent change
The racial composition of Sumner includes 93.66% White, 3.04% Black or African American, and smaller percentages for Two or more races, Asian, Native American and multiracial populations.
White (93.66%)
Black or African American (3.04%)
Two or more races (2.24%)
Asian (1%)
Native American (0.06%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 3,174 | 93.66% |
| Black or African American | 103 | 3.04% |
| Two or more races | 76 | 2.24% |
| Asian | 34 | 1% |
| Native American | 2 | 0.06% |
Married
Widowed
Divorced
Separated
Never Married
Sumner's average per capita income is $44,739. Household income levels show a median of $82,698. The poverty rate stands at 3.72%.
Name | Median | Mean |
|---|---|---|
| Married Families | $92,135 | - |
| Families | $91,927 | $103,480 |
| Households | $82,698 | $91,613 |
| Non Families | $43,929 | $67,871 |
Average Income
Median Household Income
Poverty Rate