Mason City

County:: Cerro Gordo County
County Seat:: Yes
Area (mi²):: 27.856
State:: Iowa

Mason City is a city located in Cerro Gordo County, Iowa. Mason City has a 2025 population of 26,664. It is also the county seat of Cerro Gordo County. Mason City is currently declining at a rate of -0.45% annually and its population has decreased by -2.22% since the most recent census, which recorded a population of 27,269 in 2020.

The average household income in Mason City is $78,957 with a poverty rate of 10.56%. The median age in Mason City is 43 years: 41.3 years for males, and 45.2 years for females.

Demographics

The racial composition of Mason City includes 88.43% White, 3.34% Black or African American, and smaller percentages for Asian, other race, Native Hawaiian or Pacific Islander, Native American and multiracial populations.

Population by Race

White

Two or more races

Black or African American

Asian

Other race

Native Hawaiian or Pacific Islander

Native American

Race	Population	Percentage (of total)
White	23,995	88.43%
Two or more races	1,452	5.35%
Black or African American	905	3.34%
Asian	336	1.24%
Other race	212	0.78%
Native Hawaiian or Pacific Islander	168	0.62%
Native American	67	0.25%

Mason City Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Mason City's average per capita income is $42,690. Household income levels show a median of $62,369. The poverty rate stands at 10.56%.

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	$88,871	-
Families	$79,860	$96,623
Households	$62,369	$78,957
Non Families	$39,690	$51,864

$42,690

Average Income

$62,369

Median Household Income

10.56%

Poverty Rate