Rock Falls Flag

Rock Falls

County Seat:
No
Area (mi²):
0.207
State:
Iowa

Rock Falls is a city located in Cerro Gordo County, Iowa. Rock Falls has a 2026 population of 140. Rock Falls is currently declining at a rate of -0.71% annually and its population has decreased by -6.04% since the most recent census, which recorded a population of 149 in 2020.

The median household income in Rock Falls is $71,042 with a poverty rate of 5.88%. The median age in Rock Falls is 44.5 years: 52 years for males, and 39.4 years for females. For every 100 females there are 88.9 males.

140
Total Population
677
Density (mi²)
-1 -0.71%
Growth

Rock Falls Population

Rock Falls Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
2026140-1-0.71%
2025141-2-1.4%
2024143-2-1.38%
202314500%
2022145-2-1.36%
2021147-2-1.34%
202014900%
201914800%
2018148-2-1.33%
201715000%
201615000%
2015150-1-0.66%
2014151-3-1.95%
201315410.65%
2012153-1-0.65%
2011154-1-0.65%
201015500%

Median Age

Overall: 44.5 years
Female: 39.4 years
Male: 52 years

Rock Falls Adults

There are 91 adults, (23 of whom are seniors) in Rock Falls.

Sex Ratio

Female: 63 (52.9%)
Male: 56 (47.1%)

Demographics

The racial composition of Rock Falls includes 100% White, and smaller percentages for and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White119100%
Race
Population ↓
Percentage (of total)
White119100%

Rock Falls Marital Status

Economics and Income Statistics

Rock Falls ' average per capita income is $53,438. Household income levels show a median of $71,042. The poverty rate stands at 5.88%.

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
Families$71,875$87,700
Married Families$71,875-
Households$71,042$78,536
Non Families$38,750$54,417

$53,438

Average Income

$71,042

Median Household Income

5.88%

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)