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 and multiracial populations.

Population by Race

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%

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