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.

Demographics

The racial composition of Rock Valley includes 76.36% White, 3.67% other race, and smaller percentages for and multiracial populations.

Population by Race

Race	Population	Percentage (of total)
White	3,101	76.36%
Two or more races	811	19.97%
Other race	149	3.67%

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