Monticello is a village located in Lewis County, Missouri. Monticello has a 2025 population of 104 . It is also the county seat of Lewis County . Monticello is currently declining at a rate of -0.95% annually and its population has decreased by -2.8% since the most recent census, which recorded a population of 107 in 2020.
The average household income in Monticello is $107,873 with a poverty rate of 21.64%. The median age in Monticello is 28.3 years: 28.2 years for males, and 31.1 years for females. For every 100 females there are 74.6 males.
Data after 2023 is projected based on recent change
The racial composition of Monticello includes 86.31% White, 4.75% Black or African American, and smaller percentages for and multiracial populations.
White (86.31%)
Two or more races (8.94%)
Black or African American (4.75%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 309 | 86.31% |
| Two or more races | 32 | 8.94% |
| Black or African American | 17 | 4.75% |
Married
Widowed
Divorced
Separated
Never Married
Monticello's average per capita income is $33,725. Household income levels show a median of $102,750. The poverty rate stands at 21.64%.
Name | Median | Mean |
|---|---|---|
| Families | $121,250 | $126,543 |
| Married Families | $120,833 | - |
| Households | $102,750 | $107,873 |
| Non Families | $46,250 | $49,657 |
Average Income
Median Household Income
Poverty Rate