Belleville is a city located in Republic County, Kansas. Belleville has a 2025 population of 1,970 . It is also the county seat of Republic County . Belleville is currently declining at a rate of -0.25% annually and its population has decreased by -1.25% since the most recent census, which recorded a population of 1,995 in 2020.
The average household income in Belleville is $65,505 with a poverty rate of 14.2%. The median age in Belleville is 38 years: 39.6 years for males, and 36.3 years for females. For every 100 females there are 73.9 males.
Data after 2023 is projected based on recent change
The racial composition of Belleville includes 93.71% White, and smaller percentages for Black or African American, other race and multiracial populations.
White (93.71%)
Two or more races (3.59%)
Black or African American (1.38%)
Other race (1.33%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 1,908 | 93.71% |
| Two or more races | 73 | 3.59% |
| Black or African American | 28 | 1.38% |
| Other race | 27 | 1.33% |
Married
Widowed
Divorced
Separated
Never Married
Belleville's average per capita income is $39,737. Household income levels show a median of $51,136. The poverty rate stands at 14.2%.
Name | Median | Mean |
|---|---|---|
| Married Families | $81,250 | - |
| Families | $68,047 | $89,807 |
| Households | $51,136 | $65,505 |
| Non Families | $26,188 | $35,004 |
Average Income
Median Household Income
Poverty Rate