West Alton is a city located in St. Charles County, Missouri. West Alton has a 2025 population of 352 . West Alton is currently declining at a rate of -0.28% annually and its population has decreased by -1.12% since the most recent census, which recorded a population of 356 in 2020.
The average household income in West Alton is $111,813 with a poverty rate of 1.76%. The median age in West Alton is 36.7 years: 38.2 years for males, and 33.8 years for females. For every 100 females there are 96.5 males.
Data after 2023 is projected based on recent change
The racial composition of West Alton includes 98.04% White, and smaller percentages for Black or African American, Two or more races and multiracial populations.
White (98.04%)
Black or African American (1.57%)
Two or more races (0.39%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 501 | 98.04% |
| Black or African American | 8 | 1.57% |
| Two or more races | 2 | 0.39% |
Married
Widowed
Divorced
Separated
Never Married
West Alton's average per capita income is $45,469. Household income levels show a median of $128,438. The poverty rate stands at 1.76%.
Name | Median | Mean |
|---|---|---|
| Married Families | $141,063 | - |
| Families | $140,563 | $131,875 |
| Households | $128,438 | $111,813 |
| Non Families | $43,875 | $49,583 |
Average Income
Median Household Income
Poverty Rate