Boulder township

County:: Linn County
County Seat:: No
Area (mi²):: 35.954
State:: Iowa

Boulder township is located in Linn County, Iowa. Boulder township has a 2025 population of 379. Boulder township is currently declining at a rate of 0% annually and its population has decreased by 0% since the most recent census, which recorded a population of 0 in 2020.

The average household income in Boulder township is $105,598 with a poverty rate of 9.81%.The median age in Boulder township is 36.8 years: 39.3 years for males, and 36.4 years for females.

Demographics

The racial composition of Boulder township includes 96.04% White, and smaller percentages for Native American and multiracial populations.

Population by Race

Race	Population	Percentage (of total)
White	364	96.04%
Two or more races	14	3.69%
Native American	1	0.26%

Boulder township Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Boulder township's average per capita income is $53,571. Household income levels show a median of $105,125. The poverty rate stands at 9.81%.

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	$115,278	-
Families	$107,250	$107,963
Households	$105,125	$105,598
Non Families	$38,958	$80,865

$53,571

Average Income

$105,125

Median Household Income

9.81%

Poverty Rate