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.
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 (93.7%)
Black or African American (3.0%)
Two or more races (2.2%)
Asian (1.0%)
Native American (0.1%)
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