Rock City

County:: Stephenson County
County Seat:: No
Area (mi²):: 0.136
State:: Illinois

Rock City is a village located in Stephenson County, Illinois. Rock City has a 2025 population of 276. Rock City is currently declining at a rate of -1.43% annually and its population has decreased by -6.44% since the most recent census, which recorded a population of 295 in 2020.

The average household income in Rock City is $79,311 with a poverty rate of 4.5%. The median age in Rock City is 32.2 years: 26.9 years for males, and 35.5 years for females.

Demographics

The racial composition of Rock City includes 74.87% White, 8.73% other race, and smaller percentages for Black or African American, Native American, Asian, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

White

Two or more races

Other race

Black or African American

Native American

Asian

Native Hawaiian or Pacific Islander

Race	Population	Percentage (of total)
White	283	74.87%
Two or more races	62	16.4%
Other race	33	8.73%
Black or African American	0	0%
Native American	0	0%
Asian	0	0%
Native Hawaiian or Pacific Islander	0	0%

Rock City Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Rock City's average per capita income is $41,875. Household income levels show a median of $70,000. The poverty rate stands at 4.5%.

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	$92,500	-
Families	$90,208	$92,797
Households	$70,000	$79,311
Non Families	$38,250	$34,451

$41,875

Average Income

$70,000

Median Household Income

4.5%

Poverty Rate