South Rock Island township, Illinois Population 2024

17,877

South Rock Island township is located in Rock Island County Illinois. South Rock Island township has a 2024 population of 17,877. South Rock Island township is currently declining at a rate of -0.4% annually and its population has decreased by -2.88% since the most recent census, which recorded a population of 18,408 in 2020.

The average household income in South Rock Island township is $81,623 with a poverty rate of 13.83%. The median age in South Rock Island township is 42.1 years: 40.4 years for males, and 44.8 years for females.

South Rock Island township Demographics

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

  • White: 75.28%
  • Black or African American: 12.13%
  • Asian: 5.88%
  • Two or more races: 4.54%
  • Other race: 2%
  • Native American: 0.16%
  • Native Hawaiian or Pacific Islander: 0%
Land Area (mi²)
6.9 sq mi
Density (mi²)
2,593.10/sq mi
Growth Since 2020
-2.88% (-531)
The current population of South Rock Island township, Illinois is 17,877 based on our projections of the latest US Census estimates (released May 2024). The last official US Census in 2020 recorded the population at 18,408.

Population by Race

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Race
Population
Percentage (of total)
White13,76875.28%
Black or African American2,21912.13%
Asian1,0755.88%
Two or more races8304.54%
Other race3662%
Native American300.16%
Native Hawaiian or Pacific Islander00%

White

Black or African American

Asian

Two or more races

Other race

Native American

Native Hawaiian or Pacific Islander

South Rock Island township Population by Race

South Rock Island township Population Pyramid 2024

South Rock Island township Median Age

42.1

Total

40.4

Male

44.8

Female

South Rock Island township Adults

There are 14,397 adults, (3,897 of whom are seniors) in South Rock Island township.

South Rock Island township Age Dependency

74.2

Age Dependency Ratio

37.1

Old Age Dependency Ratio

37.1

Child Dependency Ratio

South Rock Island township Sex Ratio

Female9,47651.82%
Male8,81248.18%

South Rock Island township Population by Age

South Rock Island township Renter vs Owner Occupied by Household Type

Household Type
Count
Average Size
Owner
Renter
All8,4322.1373.226.8
Non Family4,0131.1760.939.1
Married3,097391.58.5
Female9573.1865.534.5
Male3652.6273.726.3

2.94

Average Family Size

2.13

Average Household Size

73.2%

Rate of Home Ownership

Married

Male

Female

NonFamily

owner

renter

South Rock Island township Households and Families

Male

Female

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Education Attained
Count
Percentage
9th to 12th Grade5874.47%
Associates Degree1,2419.45%
Bachelors Degree1,97515.04%
Graduate Degree1,35310.3%
High School Graduate3,73128.4%
Less Than 9th Grade4273.25%
Some College3,82229.1%

Less Than 9th Grade

9th to 12th Grade

High School Graduate

Some College

Associates Degree

Bachelors Degree

Graduate Degree

South Rock Island township Educational Attainment by Sex (over 25)

South Rock Island township Educational Attainment by Race

High School Graduation Rate

Bachelors Rate

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Race
Total
High School
Bachelors
White10,2069,8822,873
Black1,5271,188166
Hispanic834654145
Asian422281129
2+ Races31822230
Other Race17113022
Native American20204

The highest rate of high school graduation is among native american people with a rate of 100%.

The highest rate of bachelors degrees is among asian people with a rate of 30.57%.

South Rock Island township Educational Attainment by Race

All

Male

Female

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Name
Average
Male
Female
Bachelors Degree$54,844$58,603$50,466
Graduate Degree$79,205$101,346$71,772
High School Graduate$39,205$45,911$24,195
Less Than 9th Grade$29,797$35,133$27,337
Overall$45,572$55,787$37,786
Some College$42,435$56,011$35,990

$45,572

Average Earnings

$55,787

Average Male

$37,786

Average Female

South Rock Island township Earnings by Educational Attainment

South Rock Island township Language by Age

Only English

Spanish

Other Indo-European Languages

Asian and Pacific Island Languages

Other Languages

South Rock Island township Language

87.54% of South Rock Island township residents speak only English, while 12.46% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 5.61% of the population.

South Rock Island township Language

South Rock Island township Poverty by Race

rate

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Name
Total
In Poverty
Poverty Rate
White12,7371,1318.88%
Black2,16867130.95%
Asian1,07550046.51%
Hispanic1,71817410.13%
Other3667319.95%
Multiple821657.92%
Native301653.33%

13.83%

Overall Poverty Rate

12.76%

Male Poverty Rate

14.83%

Female Poverty Rate

Poverty in South Rock Island township

The race most likely to be in poverty in South Rock Island township is Native, with 53.33% below the poverty level.

The race least likely to be in poverty in South Rock Island township is Multiple, with 7.92% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 3.55%. Among those working part-time, it was 15.56%, and for those that did not work, the poverty rate was 19.12%.

South Rock Island township Poverty

rate

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Rate
Poverty
Less Than 9th Grade27.23%
High School15.83%
Some College8.38%
Bachelors or Greater4.06%

South Rock Island township Poverty Rate by Education

rate

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Rate
Poverty
Male Unemployed32.14%
Female Unemployed31.41%
Female Employed8.98%
Male Employed4.9%

South Rock Island township Poverty Rate by Employment Status and Sex

South Rock Island township Income by Household Type

Households

Families

MarriedFamilies

NonFamilies

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Name
Median
Mean
Families$78,038$102,212
Households$64,621$81,623
Married Families$96,504$-999,999,999
Non Families$43,663$55,555

mean

median

Income by Household Type

South Rock Island township Marital Status

Married

Widowed

Divorced

Separated

NeverMarried

Marriage Rates

44.0%

Overall Marriage Rate

47.1%

Male Marriage Rate

41.2%

Female Marriage Rate

South Rock Island township Married by Age and Sex

male

female

South Rock Island township 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.

South Rock Island township Marital Status by Race

Married

Widowed

Divorced

Separated

NeverMarried

South Rock Island township Marital Status

Second Gulf War

First Gulf War

Vietnam

Korea

World War II

1,170

Number of Veterans

912

Male Veterans

258

Female Veterans

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War
Veterans
Vietnam402
First Gulf War205
Second Gulf War159
Korea105
World War II44

South Rock Island township Veterans by War

count

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Age Group
Veterans
75+355
55 to 64329
65 to 74281
35 to 54173
18 to 3432

South Rock Island township Veterans by Age

count

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Name
Veterans
% of Total
White1,0889.55%
Black714.18%
Hispanic131.1%
Native American1144%

South Rock Island township Veterans by Race

South Rock Island township Veterans by Education

Less Than 9th Grade

High School Graduate

Some College

Bachelors or Greater

4.13%

Veteran Poverty Rate

24.01%

Veteran Disability Rate

South Rock Island township Veterans by Education

LaborForceParticipation

62.4%

Labor Force Participation

58%

Employment Rate

7%

Unemployment Rate

South Rock Island township Employment by Age

LaborForceParticipation

South Rock Island township Employment by Race

LaborForceParticipation

South Rock Island township 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

62.53%

Born in South Rock Island township

91.85%

Native Born

8.15%

Foreign Born

3.49%

Non Citizen

4.66%

Naturalized

Place of Birth

91.85% of South Rock Island township residents were born in the United States, with 62.53% having been born in Illinois. 3.49% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Asia.

South Rock Island township Place of Birth

Note: data after 2022 is projected based on recent change

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Year
Population
Growth
Growth Rate
202917,522-71-0.4%
202817,593-71-0.4%
202717,664-71-0.4%
202617,735-71-0.4%
202517,806-71-0.4%
202417,877-71-0.4%
202317,948-71-0.39%
202218,019-173-0.95%
202118,192-216-1.17%
202018,4089445.41%
201917,464-128-0.73%
201817,592-202-1.14%
201717,794-177-0.98%
201617,971-182-1%
201518,153-114-0.62%
201418,267-46-0.25%
201318,313-20-0.11%
201218,333-19-0.1%
201118,352-10-0.05%
201018,36200%

South Rock Island township Population by Year