Rock Island County, Illinois's estimated 2024 population is 140,913 with a growth rate of -0.23% in the past year according to the most recent United States census data. Rock Island County, Illinois is the 15th largest county in Illinois. The 2010 population was 147,613 and has seen a growth of -4.54% since that time.
Year | Population | Growth | Change |
|---|---|---|---|
| 2029 | 139,298 | -323 | -0.23% |
| 2028 | 139,621 | -323 | -0.23% |
| 2027 | 139,944 | -323 | -0.23% |
| 2026 | 140,267 | -323 | -0.23% |
| 2025 | 140,590 | -323 | -0.23% |
| 2024 | 140,913 | -323 | -0.23% |
| 2023 | 141,236 | -323 | -0.23% |
| 2022 | 141,559 | -1,364 | -0.95% |
| 2021 | 142,923 | -1,437 | -1% |
| 2020 | 144,360 | 2,585 | 1.82% |
| 2019 | 141,775 | -747 | -0.52% |
| 2018 | 142,522 | -1,302 | -0.91% |
| 2017 | 143,824 | -1,153 | -0.8% |
| 2016 | 144,977 | -1,184 | -0.81% |
| 2015 | 146,161 | -929 | -0.63% |
| 2014 | 147,090 | -596 | -0.4% |
| 2013 | 147,686 | -13 | -0.01% |
| 2012 | 147,699 | 225 | 0.15% |
| 2011 | 147,474 | -139 | -0.09% |
| 2010 | 147,613 | 0 | 0% |
| 1990 | 148,723 | -17,245 | -10.39% |
| 1980 | 165,968 | -766 | -0.46% |
| 1970 | 166,734 | 15,743 | 10.43% |
| 1960 | 150,991 | 17,433 | 13.05% |
| 1950 | 133,558 | 20,235 | 17.86% |
| 1940 | 113,323 | 15,132 | 15.41% |
| 1930 | 98,191 | 5,894 | 6.39% |
| 1920 | 92,297 | 21,893 | 31.1% |
| 1910 | 70,404 | 15,155 | 27.43% |
| 1900 | 55,249 | 13,332 | 31.81% |
| 1890 | 41,917 | 3,615 | 9.44% |
| 1880 | 38,302 | 8,519 | 28.6% |
| 1870 | 29,783 | 8,778 | 41.79% |
| 1860 | 21,005 | 14,068 | 202.8% |
| 1850 | 6,937 | 4,327 | 165.79% |
| 1840 | 2,610 | -136,688 | -98.13% |
Race | Population | Percentage (of total) |
|---|---|---|
| White | 107,919 | 75.04% |
| Black or African American | 15,404 | 10.71% |
| Two or more races | 10,015 | 6.96% |
| Other race | 6,162 | 4.28% |
| Asian | 3,774 | 2.62% |
| Native American | 308 | 0.21% |
| Native Hawaiian or Pacific Islander | 237 | 0.16% |
White
Black or African American
Two or more races
Other race
Asian
Native American
Native Hawaiian or Pacific Islander
Household Type | Count | Average Size | Owner | Renter |
|---|---|---|---|---|
| All | 61,014 | 2.28 | 68.6 | 31.4 |
| Married | 26,832 | 2.98 | 87.9 | 12.1 |
| Non Family | 23,798 | 1.18 | 53.9 | 46.1 |
| Female | 7,525 | 3 | 51 | 49 |
| Male | 2,859 | 2.91 | 56.2 | 43.8 |
2.9
Average Family Size
2.28
Average Household Size
68.6%
Rate of Home Ownership
Married
Male
Female
NonFamily
owner
renter
Male
Female
Education Attained | Count | Percentage |
|---|---|---|
| 9th to 12th Grade | 6,528 | 6.61% |
| Associates Degree | 10,401 | 10.53% |
| Bachelors Degree | 15,122 | 15.31% |
| Graduate Degree | 8,648 | 8.75% |
| High School Graduate | 29,595 | 29.96% |
| Less Than 9th Grade | 3,755 | 3.8% |
| Some College | 24,739 | 25.04% |
Less Than 9th Grade
9th to 12th Grade
High School Graduate
Some College
Associates Degree
Bachelors Degree
Graduate Degree
High School Graduation Rate
Bachelors Rate
Race | Total | High School | Bachelors |
|---|---|---|---|
| White | 75,150 | 70,392 | 19,776 |
| Hispanic | 10,381 | 7,665 | 1,424 |
| Black | 8,979 | 6,948 | 1,049 |
| 2+ Races | 4,529 | 3,758 | 869 |
| Other Race | 3,520 | 2,304 | 422 |
| Asian | 2,095 | 1,541 | 988 |
| Native American | 205 | 181 | 47 |
| Islander | 140 | 106 | 34 |
The highest rate of high school graduation is among white people with a rate of 93.67%.
The highest rate of bachelors degrees is among asian people with a rate of 47.16%.
All
Male
Female
Name | Average | Male | Female |
|---|---|---|---|
| Bachelors Degree | $56,445 | $65,016 | $48,274 |
| Graduate Degree | $74,894 | $83,724 | $71,399 |
| High School Graduate | $36,517 | $45,776 | $26,842 |
| Less Than 9th Grade | $28,973 | $32,979 | $23,942 |
| Overall | $43,826 | $52,558 | $36,296 |
| Some College | $42,207 | $52,902 | $36,035 |
$43,826
Average Earnings
$52,558
Average Male
$36,296
Average Female
Only English
Spanish
Other Indo-European Languages
Asian and Pacific Island Languages
Other Languages
86.7% of Rock Island County, Illinois residents speak only English, while 13.3% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 7.62% of the population.
rate
Name | Total | In Poverty | Poverty Rate |
|---|---|---|---|
| White | 97,612 | 10,255 | 10.51% |
| Black | 14,299 | 4,886 | 34.17% |
| Hispanic | 18,790 | 3,953 | 21.04% |
| Multiple | 9,530 | 2,214 | 23.23% |
| Other | 6,060 | 1,162 | 19.17% |
| Asian | 3,589 | 962 | 26.8% |
| Native | 288 | 62 | 21.53% |
| Islander | 237 | 34 | 14.35% |
15.17%
Overall Poverty Rate
14.49%
Male Poverty Rate
15.82%
Female Poverty Rate
The race most likely to be in poverty in Rock Island County, Illinois is Black, with 34.17% below the poverty level.
The race least likely to be in poverty in Rock Island County, Illinois is White, with 10.51% below the poverty level.
The poverty rate among those that worked full-time for the past 12 months was 3.28%. Among those working part-time, it was 19.13%, and for those that did not work, the poverty rate was 19.87%.
rate
Rate | Poverty |
|---|---|
| Less Than 9th Grade | 30.94% |
| High School | 13.97% |
| Some College | 9.2% |
| Bachelors or Greater | 3.76% |
rate
Rate | Poverty |
|---|---|
| Female Unemployed | 40.25% |
| Male Unemployed | 39.21% |
| Female Employed | 9.56% |
| Male Employed | 6.29% |
Households
Families
MarriedFamilies
NonFamilies
Name | Median | Mean |
|---|---|---|
| Families | $83,401 | $97,387 |
| Households | $64,435 | $80,579 |
| Married Families | $99,921 | $115,361 |
| Non Families | $38,836 | $51,490 |
mean
median
Married
Widowed
Divorced
Separated
NeverMarried
48.0%
Overall Marriage Rate
49.6%
Male Marriage Rate
46.4%
Female Marriage Rate
male
female
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 45-54.
Married
Widowed
Divorced
Separated
NeverMarried
Second Gulf War
First Gulf War
Vietnam
Korea
World War II
8,560
Number of Veterans
7,657
Male Veterans
903
Female Veterans
War | Veterans |
|---|---|
| Vietnam | 3,399 |
| First Gulf War | 1,594 |
| Second Gulf War | 1,450 |
| Korea | 548 |
| World War II | 182 |
count
Age Group | Veterans |
|---|---|
| 65 to 74 | 2,421 |
| 75+ | 2,214 |
| 35 to 54 | 1,736 |
| 55 to 64 | 1,592 |
| 18 to 34 | 597 |
count
Name | Veterans | % of Total |
|---|---|---|
| White | 7,532 | 8.57% |
| Hispanic | 560 | 4.37% |
| 2+ Races | 553 | 9.14% |
| Black | 387 | 3.68% |
| Islander | 26 | 17.81% |
| Other Race | 22 | 0.53% |
| Asian | 21 | 0.85% |
| Native American | 19 | 7.22% |
Less Than 9th Grade
High School Graduate
Some College
Bachelors or Greater
7.27%
Veteran Poverty Rate
23.42%
Veteran Disability Rate
LaborForceParticipation
61.9%
Labor Force Participation
57.9%
Employment Rate
6.2%
Unemployment Rate
LaborForceParticipation
LaborForceParticipation
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.
Europe
Asia
Africa
Oceania
Latin America
North America
64.74%
Born in Rock Island County, Illinois
92%
Native Born
8%
Foreign Born
4.49%
Non Citizen
3.51%
Naturalized
92% of Rock Island County, Illinois residents were born in the United States, with 64.74% having been born in Illinois. 4.49% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.