Rock Rapids, Iowa Population 2021

2,474
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Rock Rapids is a city located in Lyon County Iowa. It is also the county seat of Lyon County. With a 2020 population of 2,474, it is the 138th largest city in Iowa and the 6863rd largest city in the United States . Rock Rapids is currently declining at a rate of -0.96% annually and its population has decreased by -2.94% since the most recent census, which recorded a population of 2,549 in 2010. Rock Rapids reached it's highest population of in . Spanning over 4 miles, Rock Rapids has a population density of 584 people per square mile.

The average household income in Rock Rapids is $72,644 with a poverty rate of 4.61%. The median rental costs in recent years comes to $561 per month, and the median house value is $140,900. The median age in Rock Rapids is 39.4 years, 36.3 years for males, and 42.8 years for females.

Rock Rapids Demographics

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

  • White: 97.49%
  • Two or more races: 1.06%
  • Other race: 0.86%
  • Asian: 0.31%
  • Black or African American: 0.28%
  • Native American: 0.00%
  • Native Hawaiian or Pacific Islander: 0.00%
The current population of Rock Rapids, Iowa is 2,474 based on our projections of the latest US Census estimates. The US Census estimates the 2018 population at 2,522.The last official US Census in 2010 recorded the population at 2,549.

Rock Rapids, Iowa Population 2021

Population by Race

Race Population Percentage
White2,48197.49%
Two or More Races271.06%
Some Other Race220.86%
Asian80.31%
Black or African American70.28%
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Rock Rapids Population by Race

Rock Rapids Population Pyramid $2021

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Rock Rapids Median Age

39.4


Total

36.3


Male

42.8


Female

Rock Rapids Adults

There are 1,864 adults, (533 of whom are seniors) in Rock Rapids.

Rock Rapids Age Dependency

91.2

Age Dependency Ratio

40

Old Age Dependency Ratio

51.2

Child Dependency Ratio

Rock Rapids Sex Ratio

Female

1,293

50.81%

Male

1,252

49.19%

Rock Rapids Population by Age

Rock Rapids Renter vs Owner Occupied by Household Type

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Rock Rapids Household Types

Type Owner Renter
Female52.5%47.5%
Non Family67%33%
All85.3%14.7%
Male92.3%7.7%
Married96.8%3.2%

85.3%

Rate of Home Ownership

Rock Rapids Households and Families

Type Count Average Size Owned
All1,0162.4285.3
Married5903.1196.8
Non Family3211.0567
Male652.6392.3
Female402.8552.5

3

Average Family Size

2.42

Average Household Size

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Rock Rapids Households by Type

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Education Attained Count Percentage
Less Than 9th Grade724.38%
9th to 12th Grade694.20%
High School Graduate51331.20%
Some College32519.77%
Associates Degree21012.77%
Bachelors Degree29517.94%
Graduate Degree1609.73%
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Rock Rapids Educational Attainment by Sex (over 25)

Rock Rapids Educational Attainment by Race

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Race Total High School Bachelors
White1,6061,489455
Hispanic222
Other Race222
Black73
2+ Races55
Asian44

The highest rate of high school graduation is among asian people with a rate of 100.00%.

The highest rate of bachelors degrees is among white people with a rate of 28.33%.

Rock Rapids Educational Attainment by Race

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Name Average Male Female
Overall$43,551$54,125$31,645
Less Than 9th Grade$21,806$34,167$18,750
High School Graduate$32,917$39,044$26,359
Some College$41,307$51,587$29,286
Bachelors Degree$60,375$88,750$43,558
Graduate Degree$62,560$64,766$54,306

$43,551

Average Earnings

$54,125

Average Male

$31,645

Average Female

Rock Rapids Earnings by Educational Attainment

Rock Rapids Language by Age

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Rock Rapids Language

97.71% of Rock Rapids residents speak only English, while 2.29% speak other languages. The non-English language spoken by the largest group is Other Indo-European, which is spoken by 1.29% of the population.

Rock Rapids Language

Rock Rapids Poverty by Race

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4.61%

Overall Poverty Rate

3.28%

Male Poverty Rate

5.92%

Female Poverty Rate

Poverty in Rock Rapids

The race most likely to be in poverty in Rock Rapids is White, with 4.71% below the poverty level.

The race least likely to be in poverty in Rock Rapids is White, with 4.71% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 0.53%. Among those working part-time, it was 4.52%, and for those that did not work, the poverty rate was 13.02%.

Rock Rapids Poverty

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Name Poverty
Less Than 9th Grade20.66%
High School6.68%
Some College2.92%
Bachelors or Greater2.25%

Rock Rapids Poverty Rate by Education

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Rate Poverty
Female Employed2.63%
Male Employed0.71%
Female Unemployed0.00%
Male Unemployed0.00%

Rock Rapids Poverty Rate by Employment Status and Sex

Rock Rapids Income by Household Type

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Name Median Mean
Households$58,387$72,644
Families$74,712$91,554
Married Families$80,000-
Non Families$19,789$29,687
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Income by Household Type

Rock Rapids Marital Status

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Marriage Rates

64.0%

Overall Marriage Rate

63.9%

Male Marriage Rate

64.1%

Female Marriage Rate

Rock Rapids Married by Age and Sex

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Rock Rapids Marriage

The age group where males are most likely to be married is 45-54, while the female age group most likely to be married is 35-44.

Rock Rapids Marital Status by Race

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Rock Rapids Marital Status

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150

Number of Veterans

150

Male Veterans

Female Veterans

War Veterans
Second Gulf War48
First Gulf War40
Vietnam36
Korea7
World War II

Rock Rapids Veterans by War

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Age Group Veterans
35 to 5462
75+33
65 to 7432
18 to 3414
55 to 649

Rock Rapids Veterans by Age

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Name Veterans % of Total
White1488.12%
Hispanic29.09%
Other Race29.09%

Rock Rapids Veterans by Race

Rock Rapids Veterans by Education

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3.45%

Veteran Poverty Rate

32.41%

Veteran Disability Rate

Rock Rapids Veterans by Education

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67.3%

Labor Force Participation

65.8%

Employment Rate

2.2%

Unemployment Rate

Rock Rapids Employment by Age

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Rock Rapids Employment by Race

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Rock Rapids Employment by Education

Origin of Non-Citizens

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

Origin of Naturalized Citizens

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60.43%

Born in Rock Rapids

98.51%

Native Born

1.49%

Foreign Born

0.79%

Non Citizen

0.71%

Naturalized

Place of Birth

98.51% of Rock Rapids residents were born in the United States, with 60.43% having been born in Iowa. 0.79% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.

Rock Rapids Place of Birth

Note: 2020 and 2021 data is projected
Year Population Growth Annual Growth Rate
20212,474-24-0.96%
20202,498-24-0.95%
20192,522-24-0.94%
20182,546-1-0.04%
20172,547-3-0.12%
20162,550-16-0.62%
20152,56660.23%
20142,560-1-0.04%
20132,561-7-0.27%
20122,56810.04%
20112,567240.94%
20102,543-30-0.12%
20002,573-28-0.11%
19902,601-92-0.35%
19802,693610.23%
19702,632-148-0.55%
19602,7801400.52%
19502,640840.32%
19402,5560.00%

Rock Rapids Population by Year