St. Charles

County:: Madison County
County Seat:: No
Area (mi²):: 0.621
State:: Iowa

St. Charles is a city located in Madison County, Iowa. St. Charles has a 2025 population of 641. St. Charles is currently declining at a rate of -0.16% annually and its population has decreased by -0.77% since the most recent census, which recorded a population of 646 in 2020.

The average household income in St. Charles is $92,393 with a poverty rate of 6.31%. The median age in St. Charles is 33 years: 33 years for males, and 32.8 years for females.

Demographics

The racial composition of St. Charles includes 93.71% White, 5.05% other race, and smaller percentages for Two or more races, Black or African American, Native American, Asian, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

White

Other race

Two or more races

Black or African American

Native American

Asian

Native Hawaiian or Pacific Islander

Race	Population	Percentage (of total)
White	835	93.71%
Other race	45	5.05%
Two or more races	11	1.23%
Black or African American	0	0%
Native American	0	0%
Asian	0	0%
Native Hawaiian or Pacific Islander	0	0%

St. Charles Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

St. Charles' average per capita income is $59,375. Household income levels show a median of $81,944. The poverty rate stands at 6.31%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.

Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.

Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.

Name	Median	Mean
Married Families	$109,432	-
Families	$101,875	$110,288
Households	$81,944	$92,393
Non Families	$54,297	$60,459

$59,375

Average Income

$81,944

Median Household Income

6.31%

Poverty Rate