Sangamon Valley township

County:: Cass County
County Seat:: No
Area (mi²):: 39.641
State:: Illinois

Sangamon Valley township is located in Cass County, Illinois. Sangamon Valley township has a 2025 population of 313. Sangamon Valley township is currently declining at a rate of -0.32% annually and its population has decreased by -3.69% since the most recent census, which recorded a population of 325 in 2020.

The average household income in Sangamon Valley township is $134,964 with a poverty rate of 1.3%. The median age in Sangamon Valley township is 42.7 years: 37.5 years for males, and 61.5 years for females.

Demographics

The racial composition of Sangamon Valley township includes 98.7% White, and smaller percentages for Black or African American, Native American, Asian, Native Hawaiian or Pacific Islander, other race, Two or more races and multiracial populations.

Population by Race

White

Black or African American

Native American

Asian

Native Hawaiian or Pacific Islander

Other race

Two or more races

Race	Population	Percentage (of total)
White	454	98.7%
Black or African American	6	1.3%
Native American	0	0%
Asian	0	0%
Native Hawaiian or Pacific Islander	0	0%
Other race	0	0%
Two or more races	0	0%

Sangamon Valley township Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Sangamon Valley township's average per capita income is $107,895. Household income levels show a median of $126,218. The poverty rate stands at 1.3%.

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
Families	$164,500	$173,351
Married Families	$164,500	-
Households	$126,218	$134,964
Non Families	$125,919	$110,356

$107,895

Average Income

$126,218

Median Household Income

1.3%

Poverty Rate