Hamilton

County:: Marion County
County Seat:: No
Area (mi²):: 0.506
State:: Iowa

Hamilton is a city located in Marion County, Iowa. Hamilton has a 2025 population of 128. Hamilton is currently growing at a rate of 0.79% annually and its population has increased by 2.4% since the most recent census, which recorded a population of 125 in 2020.

The average household income in Hamilton is $66,067 with a poverty rate of 3.45%. The median age in Hamilton is 35.5 years: 37.1 years for males, and 33.5 years for females.

Demographics

The racial composition of Hamilton includes 95.4% White, and smaller percentages for Black or African American, Native American, Asian, Native Hawaiian or Pacific Islander, other race and multiracial populations.

Population by Race

White

Two or more races

Black or African American

Native American

Asian

Native Hawaiian or Pacific Islander

Other race

Race	Population	Percentage (of total)
White	83	95.4%
Two or more races	4	4.6%
Black or African American	0	0%
Native American	0	0%
Asian	0	0%
Native Hawaiian or Pacific Islander	0	0%
Other race	0	0%

Hamilton Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Hamilton's average per capita income is $49,167. Household income levels show a median of $70,000. The poverty rate stands at 3.45%.

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	$94,375	-
Families	$70,625	$69,031
Households	$70,000	$66,067
Non Families	$45,625	$41,757

$49,167

Average Income

$70,000

Median Household Income

3.45%

Poverty Rate