Green Castle

County:: Sullivan County
County Seat:: No
Area (mi²):: 0.447
State:: Missouri

Green Castle is a city located in Sullivan County, Missouri. Green Castle has a 2025 population of 208. Green Castle is currently declining at a rate of -0.95% annually and its population has decreased by -4.59% since the most recent census, which recorded a population of 218 in 2020.

The average household income in Green Castle is $67,768 with a poverty rate of 10.57%. The median age in Green Castle is 51.2 years: 43.6 years for males, and 51.9 years for females.

Demographics

The racial composition of Green Castle includes 96.68% White, and smaller percentages for Two or more races, Native American, other race, Black or African American, Asian, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

White

Two or more races

Native American

Other race

Black or African American

Asian

Native Hawaiian or Pacific Islander

Race	Population	Percentage (of total)
White	320	96.68%
Two or more races	6	1.81%
Native American	4	1.21%
Other race	1	0.3%
Black or African American	0	0%
Asian	0	0%
Native Hawaiian or Pacific Islander	0	0%

Green Castle Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Green Castle's average per capita income is $55,625. Household income levels show a median of $56,250. The poverty rate stands at 10.57%.

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	$76,458	-
Non Families	$57,917	$52,830
Households	$56,250	$67,768
Families	$55,750	$77,493

$55,625

Average Income

$56,250

Median Household Income

10.57%

Poverty Rate