Rock Grove township

County:: Stephenson County
County Seat:: No
Area (mi²):: 30.288
State:: Illinois

Rock Grove township is located in Stephenson County, Illinois. Rock Grove township has a 2025 population of 1,420. Rock Grove township is currently declining at a rate of -1.05% annually and its population has decreased by -4.89% since the most recent census, which recorded a population of 1,493 in 2020.

The average household income in Rock Grove township is $112,579 with a poverty rate of 9.94%. The median age in Rock Grove township is 40.5 years: 49.6 years for males, and 39.1 years for females.

Demographics

The racial composition of Rock Grove township includes 96.32% White, and smaller percentages for Asian, Two or more races, Black or African American, Native American, Native Hawaiian or Pacific Islander, other race and multiracial populations.

Population by Race

White

Asian

Two or more races

Black or African American

Native American

Native Hawaiian or Pacific Islander

Other race

Race	Population	Percentage (of total)
White	1,569	96.32%
Asian	23	1.41%
Two or more races	19	1.17%
Black or African American	18	1.1%
Native American	0	0%
Native Hawaiian or Pacific Islander	0	0%
Other race	0	0%

Rock Grove township Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Rock Grove township's average per capita income is $70,481. Household income levels show a median of $84,700. The poverty rate stands at 9.94%.

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	$107,292	-
Families	$84,800	$114,054
Households	$84,700	$112,579
Non Families	$77,155	$85,570

$70,481

Average Income

$84,700

Median Household Income

9.94%

Poverty Rate