Sumner is located in Osborne County, Kansas. Sumner has a 2025 population of 138 . Sumner is currently declining at a rate of -2.13% annually and its population has decreased by -6.76% since the most recent census, which recorded a population of 148 in 2020.
The average household income in Sumner is $70,234 with a poverty rate of 18.93%. The median age in Sumner is 40.3 years: 29.6 years for males, and 57.7 years for females. For every 100 females there are 101.2 males.
Data after 2023 is projected based on recent change
The racial composition of Sumner includes 98.82% White, and smaller percentages for Black or African American and multiracial populations.
White (98.82%)
Black or African American (1.18%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 167 | 98.82% |
| Black or African American | 2 | 1.18% |
Married
Widowed
Divorced
Separated
Never Married
Sumner's average per capita income is $58,333. Household income levels show a median of $57,708. The poverty rate stands at 18.93%.
Name | Median | Mean |
|---|---|---|
| Families | $57,917 | $63,233 |
| Households | $57,708 | $70,234 |
| Married Families | - | - |
| Non Families | - | $79,944 |
Average Income
Median Household Income
Poverty Rate