Rock Island, Washington Population 2021

1,272
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Rock Island is a city located in Washington. With a 2020 population of 1,272, it is the 191st largest city in Washington and the 9330th largest city in the United States. Rock Island is currently growing at a rate of 6.18% annually and its population has increased by 61.42% since the most recent census, which recorded a population of 788 in 2010. Rock Island reached it's highest population of 1,272 in 2021. Spanning over 1 miles, Rock Island has a population density of 1,551 people per square mile.

The average household income in Rock Island is $49,875 with a poverty rate of 12.47%. The median rental costs in recent years comes to $618 per month, and the median house value is $156,500. The median age in Rock Island is 31.3 years, 30.7 years for males, and 33.4 years for females. For every 100 females there are 99.0 males.

Rock Island Demographics

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

  • White: 62.01%
  • Other race: 35.57%
  • Two or more races: 2.41%
  • Black or African American: 0.00%
  • Native American: 0.00%
  • Asian: 0.00%
  • Native Hawaiian or Pacific Islander: 0.00%
The current population of Rock Island, Washington is 1,272, based on our projections of the latest US Census estimates. The US Census estimates the 2018 population at 1,050.The last official US Census in 2010 recorded the population at 788.

Rock Island, Washington Population 2021

Population by Race

Race Population Percentage
White59162.01%
Some Other Race33935.57%
Two or More Races232.41%
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Rock Island Population by Race

Rock Island Population Pyramid 2021

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Rock Island Median Age

31.3


Total

30.7


Male

33.4


Female

Rock Island Adults

There are 666 adults, (122 of whom are seniors) in Rock Island.

Rock Island Age Dependency

75.2

Age Dependency Ratio

22.4

Old Age Dependency Ratio

52.8

Child Dependency Ratio

Rock Island Sex Ratio

Female

479

50.26%

Male

474

49.74%

Rock Island Population by Age

Rock Island Renter vs Owner Occupied by Household Type

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Rock Island Household Types

Type Owner Renter
Married86.9%13.1%
Female80.9%19.1%
All77.8%22.2%
Non Family70.2%29.8%
Male63%37%

77.8%

Rate of Home Ownership

Rock Island Households and Families

Type Count Average Size Owned
All3422.7977.8
Married1373.7686.9
Non Family1311.4270.2
Female473.7780.9
Male272.7863

3.49

Average Family Size

2.79

Average Household Size

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Rock Island Households by Type

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Education Attained Count Percentage
Less Than 9th Grade11620.86%
9th to 12th Grade5810.43%
High School Graduate23141.55%
Some College10017.99%
Associates Degree305.40%
Bachelors Degree122.16%
Graduate Degree91.62%
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Rock Island Educational Attainment by Sex (over 25)

Rock Island Educational Attainment by Race

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Name Total High School Bachelors
White32628714
Hispanic217827
Other Race179707
Multiple Races1313

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

The highest rate of bachelors degrees is among white people with a rate of 4.29%.

Rock Island Educational Attainment by Race

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Name Average Male Female
Overall$29,167$29,545$28,125
Less Than High School$29,034$36,458$22,167
High School Grad$26,250$24,875$36,875
Some College$32,750$$43,438
Bachelors Degree$$$
Graduate Degree$$$

$29,167

Average Earnings

$29,545

Average Male

$28,125

Average Female

Rock Island Earnings by Educational Attainment

Rock Island Language by Age

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Rock Island Language

53.19% of Rock Island residents speak only English, while 46.81% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 46.35% of the population.

Rock Island Language

Rock Island Poverty by Race

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Name Total In Poverty Poverty Rate
White44310623.93%
Hispanic474102.11%
Other33920.59%

12.47%

Overall Poverty Rate

12.03%

Male Poverty Rate

12.94%

Female Poverty Rate

Poverty in Rock Island

The race most likely to be in poverty in Rock Island is White, with 23.93% below the poverty level.

The race least likely to be in poverty in Rock Island is Other, with 0.59% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 2.99%. Among those working part-time, it was 15.05%, and for those that did not work, the poverty rate was 10.61%.

Rock Island Poverty

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Name Poverty
Some College15.38%
Bachelors or Greater14.29%
High School8.23%
Less Than High School6.90%

Rock Island Poverty Rate by Education

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Name Poverty
Female Unemployed0.00%
Male Unemployed23.53%
Male Employed10.50%
Female Employed4.92%

Rock Island Poverty Rate by Employment Status and Sex

Rock Island Income by Household Type

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Name Median Mean
Households$48,611$49,875
Families$55,724$61,148
Married Families$63,292-
Non Families$25,804$28,272
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Income by Household Type

Rock Island Marital Status

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Marriage Rates

40.1%

Overall Marriage Rate

42.3%

Male Marriage Rate

37.8%

Female Marriage Rate

Rock Island Married by Age and Sex

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Rock Island 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 45-54.

Rock Island Marital Status by Race

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Rock Island Marital Status

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42

Number of Veterans

39

Male Veterans

3

Female Veterans

War Veterans
Vietnam31
World War II8
Korea
First Gulf War
Second Gulf War

Rock Island Veterans by War

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Age Group Veterans
55 to 6432
75+8
65 to 742
35 to 54
18 to 34

Rock Island Veterans by Age

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Rock Island Veterans by Race

Rock Island Veterans by Education

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4.76%

Veteran Poverty Rate

95.24%

Veteran Disability Rate

Rock Island Veterans by Education

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56.9%

Labor Force Participation

52.1%

Employment Rate

8.5%

Unemployment Rate

Rock Island Employment by Age

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Rock Island Employment by Race

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Rock Island 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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58.97%

Born in Washington

75.76%

Native Born

24.24%

Foreign Born

17.52%

Non Citizen

6.72%

Naturalized

Place of Birth

75.76% of Rock Island residents were born in the United States, with 58.97% having been born in Washington. 17.52% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.

Rock Island Place of Birth

Year Population Growth Annual Growth Rate
20211,272746.18%
20201,198746.58%
20191,124747.05%
20181,050333.24%
20171,017586.05%
2016959475.15%
2015912182.01%
201489450.56%
201388950.57%
2012884111.26%
2011873-2-0.23%
20108750.00%

Rock Island Population by Year