Rock Falls demographics profile

StatisticRock FallsIllinoisNational
Population density (sq mi)2,28722291
Median age40.037.437.7
Male/Female ratio1.0:11.0:11.0:1
Married (15yrs & older)54%55%55%
Families w/ Kids under 1838%44%43%
Speak English92%77%79%
Speak Spanish8%13%13%
Rock Falls, IL has a population of 9,104 and is the 4,222nd largest city in the United States. The population density is 2,287 per sq mi which is 929% higher than the Illinois average and 2425% higher than the national average. The median age in Rock Falls is 40 which is approximately 7% higher than the Illinois average of 37. In Rock Falls, 54% of the population over 15 years of age are married, 92% speak English and 8% speak Spanish. 83% of Rock Falls residents were born in Illinois, 13% were born out of state, 0% were born outside of the United States and 3% were foreign born.
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Did you know?

  • The population density in Rock Falls is 929% higher than Illinois.
  • The median age in Rock Falls is 7% higher than Illinois.
  • In Rock Falls 89.37% of the population is White.
  • In Rock Falls 4.14% of the population is Black or African American.
  • In Rock Falls 0.07% of the population is Asian.

Compare Rock Falls, IL Demographics To Other Cities

Rock Falls population breakdown by race

RaceRock FallsIllinoisNational
Black or African American4.14%14.30%12.63%
American Indian0.26%0.23%0.82%
Native Hawaiian0.00%0.03%0.18%
Mixed race2.17%2.34%3.06%
Other race3.99%5.86%4.75%
In Rock Falls, 13.3% of people are of Hispanic or Latino origin.
Please note: Hispanics may be of any race, so also are included in any/all of the applicable race categories above.

Languages spoken

Place of birth by citizenship

Household income distribution

Source of income

Rock Falls age breakdown

Marital status

Age of children in married couples

Source: The Rock Falls, IL demographics data displayed above is derived from the 2016 United States Census Bureau American Community Survey (ACS).
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