Greencastle township

County:: Marshall County
County Seat:: No
Area (mi²):: 36.307
State:: Iowa

Greencastle township is located in Marshall County, Iowa. Greencastle township has a 2025 population of 1,069. Greencastle 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 Greencastle township is $91,588 with a poverty rate of 7.31%.The median age in Greencastle township is 42.5 years: 40.1 years for males, and 46.7 years for females.

Demographics

The racial composition of Greencastle township includes 96.16% White, and smaller percentages for Asian and multiracial populations.

Population by Race

Race	Population	Percentage (of total)
White	1,028	96.16%
Two or more races	37	3.46%
Asian	4	0.37%

Greencastle township Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Greencastle township's average per capita income is $44,457. Household income levels show a median of $95,395. The poverty rate stands at 7.31%.

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	$104,375	-
Households	$95,395	$91,588
Families	$93,185	$97,924
Non Families	$52,159	$68,117

$44,457

Average Income

$95,395

Median Household Income

7.31%

Poverty Rate