Keystone

County:: Benton County
County Seat:: No
Area (mi²):: 0.448
State:: Iowa

Keystone is a city located in Benton County, Iowa. Keystone has a 2025 population of 633. Keystone is currently growing at a rate of 0.96% annually and its population has increased by 5.15% since the most recent census, which recorded a population of 602 in 2020.

The average household income in Keystone is $88,857 with a poverty rate of 10.76%. The median age in Keystone is 36 years: 33 years for males, and 39.8 years for females.

Demographics

The racial composition of Keystone includes 91.03% White, and smaller percentages for other race, Black or African American, Native American, Asian, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

White

Two or more races

Other race

Black or African American

Native American

Asian

Native Hawaiian or Pacific Islander

Race	Population	Percentage (of total)
White	751	91.03%
Two or more races	32	3.88%
Other race	24	2.91%
Black or African American	11	1.33%
Native American	7	0.85%
Asian	0	0%
Native Hawaiian or Pacific Islander	0	0%

Keystone Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Keystone's average per capita income is $47,222. Household income levels show a median of $68,750. The poverty rate stands at 10.76%.

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	$95,234	-
Families	$75,417	$101,478
Households	$68,750	$88,857
Non Families	$39,750	$50,743

$47,222

Average Income

$68,750

Median Household Income

10.76%

Poverty Rate