Herkimer is located in Marshall County, Kansas. Herkimer has a 2025 population of 217 . Herkimer is currently declining at a rate of 0% annually and its population has decreased by -1.81% since the most recent census, which recorded a population of 221 in 2020.
The average household income in Herkimer is $109,053 with a poverty rate of 0%. The median age in Herkimer is 35.4 years: 25.8 years for males, and 50.9 years for females. For every 100 females there are 216.0 males.
Data after 2023 is projected based on recent change
The racial composition of Herkimer includes 100% White, and smaller percentages for and multiracial populations.
White (100%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 256 | 100% |
Married
Widowed
Divorced
Separated
Never Married
Herkimer's average per capita income is $41,793. Household income levels show a median of $120,486. The poverty rate stands at 0%.
Name | Median | Mean |
|---|---|---|
| Households | $120,486 | $109,053 |
| Families | $120,486 | $109,053 |
| Married Families | $120,486 | - |
| Non Families | - | - |
Average Income
Median Household Income
Poverty Rate