Waterville is a city located in Marshall County, Kansas. Waterville has a 2026 population of 646. Waterville is currently declining at a rate of -0.31% annually and its population has decreased by -1.82% since the most recent census, which recorded a population of 658 in 2020.
The median household income in Waterville is $68,611 with a poverty rate of 7.35%. The median age in Waterville is 44.2 years: 44.5 years for males, and 43.9 years for females. For every 100 females there are 79.8 males.
Data after 2023 is projected based on recent change
Overall: 44.2 years
Female: 43.9 years
Male: 44.5 years
There are 587 adults, (213 of whom are seniors) in Waterville.
Female: 416 (55.6%)
Male: 332 (44.4%)
The racial composition of Waterville includes 87.83% White, and smaller percentages for other race, Native American and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 657 | 87.83% |
| Two or more races | 74 | 9.89% |
| Other race | 16 | 2.14% |
| Native American | 1 | 0.13% |
Waterville 's average per capita income is $41,429. Household income levels show a median of $68,611. The poverty rate stands at 7.35%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $79,196 | - |
| Families | $78,772 | $83,872 |
| Households | $68,611 | $72,187 |
| Non Families | $31,776 | $51,201 |
Average Income
Median Household Income
Poverty Rate