Rochester township

County:: Sangamon County
County Seat:: No
Area (mi²):: 33.365
State:: Illinois

Rochester township is located in Sangamon County, Illinois. Rochester township has a 2025 population of 5,611. Rochester township is currently growing at a rate of 0.81% annually and its population has increased by 1.89% since the most recent census, which recorded a population of 5,507 in 2020.

The average household income in Rochester township is $139,515 with a poverty rate of 1.51%. The median age in Rochester township is 42.7 years: 39.7 years for males, and 44.2 years for females.

Demographics

The racial composition of Rochester township includes 95.69% White, and smaller percentages for Two or more races, Asian, Black or African American, Native American, Native Hawaiian or Pacific Islander, other race and multiracial populations.

Population by Race

White

Two or more races

Asian

Black or African American

Native American

Native Hawaiian or Pacific Islander

Other race

Race	Population	Percentage (of total)
White	5,266	95.69%
Two or more races	111	2.02%
Asian	97	1.76%
Black or African American	29	0.53%
Native American	0	0%
Native Hawaiian or Pacific Islander	0	0%
Other race	0	0%

Rochester township Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Rochester township's average per capita income is $60,888. Household income levels show a median of $112,727. The poverty rate stands at 1.51%.

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	$124,569	-
Families	$121,799	$146,104
Households	$112,727	$139,515
Non Families	$57,009	$114,314

$60,888

Average Income

$112,727

Median Household Income

1.51%

Poverty Rate