Rock Falls

County:: Whiteside County
County Seat:: No
Area (mi²):: 3.983
State:: Illinois

Rock Falls is a city located in Whiteside County, Illinois. Rock Falls has a 2025 population of 8,487. Rock Falls is currently declining at a rate of -0.66% annually and its population has decreased by -3.22% since the most recent census, which recorded a population of 8,769 in 2020.

The average household income in Rock Falls is $67,324 with a poverty rate of 22.72%. The median age in Rock Falls is 39.9 years: 39.4 years for males, and 40.3 years for females.

Demographics

The racial composition of Rock Falls includes 82.69% White, 4.04% 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	7,180	82.69%
Two or more races	1,090	12.55%
Other race	351	4.04%
Black or African American	37	0.43%
Native American	23	0.26%
Asian	2	0.02%
Native Hawaiian or Pacific Islander	0	0%

Rock Falls Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Rock Falls' average per capita income is $43,712. Household income levels show a median of $48,733. The poverty rate stands at 22.72%.

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	$88,796	-
Families	$59,365	$83,421
Households	$48,733	$67,324
Non Families	$33,851	$41,151

$43,712

Average Income

$48,733

Median Household Income

22.72%

Poverty Rate