Rock Valley Flag

Rock Valley

County:
Sioux County
County Seat:
No
Area (mi²):
4.461
State:
Iowa

Rock Valley is a city located in Sioux County, Iowa. Rock Valley has a 2025 population of 4,030. Rock Valley is currently declining at a rate of -0.17% annually and its population has decreased by -0.91% since the most recent census, which recorded a population of 4,067 in 2020.

The average household income in Rock Valley is $91,511 with a poverty rate of 6.42%. The median age in Rock Valley is 41 years: 38.4 years for males, and 41.6 years for females.

4K
Total Population
903
Density (mi²)
-7 -0.17%
Growth

Rock Valley Population

Rock Valley Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Rock Valley includes 76.36% White, 3.67% 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)
White3,10176.36%
Two or more races81119.97%
Other race1493.67%
Black or African American00%
Native American00%
Asian00%
Native Hawaiian or Pacific Islander00%

Rock Valley Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Rock Valley's average per capita income is $39,909. Household income levels show a median of $67,012. The poverty rate stands at 6.42%.

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$107,607-
Families$97,344$114,159
Households$67,012$91,511
Non Families$23,736$36,040

$39,909

Average Income

$67,012

Median Household Income

6.42%

Poverty Rate

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)