Rochester township Flag

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.

5.6K
Total Population
168
Density (mi²)
45 0.81%
Growth

Rochester township Population

Rochester township Population

Data after 2023 is projected based on recent change

Demographics

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

Population by Race

Race
Population
Percentage (of total)
White5,26695.69%
Two or more races1112.02%
Asian971.76%
Black or African American290.53%

Rochester township Marital Status

OverallMalesFemales0%10%20%30%40%50%60%70%80%90%100%

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

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)