Rock Valley, Iowa Population 2024

4,044

Rock Valley is a city located in Sioux County Iowa. Rock Valley has a 2024 population of 4,044. Rock Valley is currently declining at a rate of -0.39% annually and its population has decreased by -0.66% since the most recent census, which recorded a population of 4,071 in 2020.

The average household income in Rock Valley is $89,808 with a poverty rate of 5.62%. The median rental costs in recent years comes to - per month, and the median house value is -. The median age in Rock Valley is 41.1 years, 37.1 years for males, and 43.6 years for females.

Rock Valley Demographics

According to the most recent ACS, the racial composition of Rock Valley was:

  • White: 81.48%
  • Two or more races: 14.98%
  • Other race: 3.54%
  • Black or African American:
  • Native American:
  • Asian:
  • Native Hawaiian or Pacific Islander:
State
Iowa
Land Area (mi²)
4.4 sq mi
Density (mi²)
928.70/sq mi
Growth Since 2020
-0.66% (-27)
The current population of Rock Valley, Iowa is 4,044 based on our projections of the latest US Census estimates.The last official US Census in 2020 recorded the population at 4,071.

Rock Valley, Iowa Population 2024

Population by Race

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Race
Population
Percentage (of total)
White3,29681.48%
Two or more races60614.98%
Other race1433.54%
Black or African American
Native American
Asian
Native Hawaiian or Pacific Islander
showing: 7 rows

White

Two or more races

Other race

Black or African American

Native American

Asian

Native Hawaiian or Pacific Islander

Rock Valley Population by Race

Rock Valley Population Pyramid 2024

Rock Valley Median Age

41.1

Total

37.1

Male

43.6

Female

Rock Valley Adults

There are 3,112 adults, (789 of whom are seniors) in Rock Valley.

Rock Valley Age Dependency

74.1

Age Dependency Ratio

34

Old Age Dependency Ratio

40.2

Child Dependency Ratio

Rock Valley Sex Ratio

Female2,10051.92%
Male1,94548.08%

Rock Valley Population by Age

Rock Valley Renter vs Owner Occupied by Household Type

Household Type
Count
Average Size
Owner
Renter
All1,5942.4773.126.9
Married8533.4683.116.9
Non Family6271.1358.141.9
Female1012.578.221.8
Male1321000
showing: 5 rows

3.31

Average Family Size

2.47

Average Household Size

73.1%

Rate of Home Ownership

Married

Male

Female

NonFamily

owner

renter

Rock Valley Households and Families

Male

Female

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Less Than 9th Grade

9th to 12th Grade

High School Graduate

Some College

Associates Degree

Bachelors Degree

Graduate Degree

Rock Valley Educational Attainment by Sex (over 25)

Rock Valley Educational Attainment by Race

High School Graduation Rate

Bachelors Rate

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The highest rate of high school graduation is among white people with a rate of 92.09%.

The highest rate of bachelors degrees is among white people with a rate of 24.31%.

Rock Valley Educational Attainment by Race

All

Male

Female

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$42,250

Average Earnings

$51,392

Average Male

$35,074

Average Female

Rock Valley Earnings by Educational Attainment

Rock Valley Language by Age

Only English

Spanish

Other Indo-European Languages

Asian and Pacific Island Languages

Other Languages

Rock Valley Language

85.07% of Rock Valley residents speak only English, while 14.93% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 14.56% of the population.

Rock Valley Language

Rock Valley Poverty by Race

rate

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Name
Total
In Poverty
Poverty Rate
White2,9952177.25%
Other14374.9%
Hispanic97870.72%
showing: 3 rows

5.62%

Overall Poverty Rate

6.94%

Male Poverty Rate

4.36%

Female Poverty Rate

Poverty in Rock Valley

The race most likely to be in poverty in Rock Valley is White, with 7.25% below the poverty level.

The race least likely to be in poverty in Rock Valley is Hispanic, with 0.72% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 0.87%. Among those working part-time, it was 3.26%, and for those that did not work, the poverty rate was 21.63%.

Rock Valley Poverty

rate

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Rate
Poverty
Less Than 9th Grade26.16%
Bachelors or Greater5.52%
High School3.98%
Some College1.92%
showing: 4 rows

Rock Valley Poverty Rate by Education

rate

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Rate
Poverty
Male Employed1.14%
Male Unemployed
Female Employed1.93%
Female Unemployed
showing: 4 rows

Rock Valley Poverty Rate by Employment Status and Sex

Rock Valley Income by Household Type

Households

Families

MarriedFamilies

NonFamilies

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mean

median

Income by Household Type

Rock Valley Marital Status

Married

Widowed

Divorced

Separated

NeverMarried

Marriage Rates

54.8%

Overall Marriage Rate

57.6%

Male Marriage Rate

52.3%

Female Marriage Rate

Rock Valley Married by Age and Sex

male

female

Rock Valley Marriage

The age group where males are most likely to be married is Over 65, while the female age group most likely to be married is 55-64.

Rock Valley Marital Status by Race

Married

Widowed

Divorced

Separated

NeverMarried

Rock Valley Marital Status

Second Gulf War

First Gulf War

Vietnam

Korea

World War II

48

Number of Veterans

48

Male Veterans

Female Veterans

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Rock Valley Veterans by War

count

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Rock Valley Veterans by Age

count

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Rock Valley Veterans by Race

Rock Valley Veterans by Education

Less Than 9th Grade

High School Graduate

Some College

Bachelors or Greater

Veteran Poverty Rate

Veteran Disability Rate

Rock Valley Veterans by Education

LaborForceParticipation

74.9%

Labor Force Participation

74.3%

Employment Rate

0.8%

Unemployment Rate

Rock Valley Employment by Age

LaborForceParticipation

Rock Valley Employment by Race

LaborForceParticipation

Rock Valley Employment by Education

Origin of Non-Citizens

Europe

Asia

Africa

Oceania

Latin America

North America

Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.

Origin of Naturalized Citizens

Europe

Asia

Africa

Oceania

Latin America

North America

64.92%

Born in Rock Valley

92.95%

Native Born

7.05%

Foreign Born

6.35%

Non Citizen

0.69%

Naturalized

Place of Birth

92.95% of Rock Valley residents were born in the United States, with 64.92% having been born in Iowa. 6.35% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.

Rock Valley Place of Birth

Note: data after 2022 is projected based on recent change

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Year
Population
Growth
Growth Rate
20293,964-16-0.4%
20283,980-16-0.4%
20273,996-16-0.4%
20264,012-16-0.4%
20254,028-16-0.4%
20244,044-16-0.39%
20234,060-16-0.39%
20224,076-16-0.39%
20214,092210.52%
20204,0711945%
20193,877250.65%
20183,852150.39%
20173,837220.58%
20163,815391.03%
20153,776571.53%
20143,719521.42%
20133,667892.49%
20123,578411.16%
20113,537471.35%
20103,49078829.16%
20002,7021626.38%
19902,540-166-6.13%
19802,706
showing: 23 rows

Rock Valley Population by Year