Rock Island County, IL
Demographics & Statistics
Updated: 2025-10-25
Updated: 2025-10-25
Life in Rock Island County research summary. HomeSnacks has been researching the quality of life in Rock Island County over the past eight years using Census data, FBI crime data, cost of living data, and other primary sources. Based on the most recently available data, we found the following about life in Rock Island County:
The population in Rock Island County is 142,995.
The median home value in Rock Island County is $155,688.
The median income in Rock Island County is $66,768.
The median rent in Rock Island County is $863.
The unemployment rate in Rock Island County is 5.7%.
The poverty rate in Rock Island County is 15.4%.
The average high in Rock Island County is 68.5° and there are 87.6 inches of rainfall annually.
The average high in Rock Island County is 68.5°.
There are 75.61 nice days each year.
Expect an average of 87.6 inches of rain each year with 9.3 inches of snow.
There is an average of 4:55 hours of sun each day in Rock Island County.
| Stat | Rock Island County |
|---|---|
| Mean High | 68.5 |
| Nice Days | 75.61 |
| Rainfall | 87.6 |
| Snowfall | 9.3 |
| Sunny Hours | 4:55 |
The current population in Rock Island County is 142,995. The population has increased 0.6% from 2019.
| Year | Population | % Change |
|---|---|---|
| 2023 | 144,694 | 1.3% |
| 2022 | 142,801 | -0.7% |
| 2021 | 143,873 | - |
Rock Island County is 50.5% female with 72,230 female residents.
Rock Island County is 49.5% male with 70,765 male residents.
| Gender | Rock Island County | IL | USA |
|---|---|---|---|
| Female | 50.5% | 50.6% | 50.5% |
| Male | 49.5% | 49.4% | 49.5% |
Rock Island County is:
68.5% White with 97,940 White residents.
10.4% African American with 14,883 African American residents.
0.1% American Indian with 111 American Indian residents.
2.5% Asian with 3,611 Asian residents.
0.0% Hawaiian with 50 Hawaiian residents.
0.2% Other with 353 Other residents.
4.2% Two Or More with 6,034 Two Or More residents.
14.0% Hispanic with 20,013 Hispanic residents.
| Race | Rock Island County | IL | USA |
|---|---|---|---|
| White | 68.5% | 58.7% | 58.2% |
| African American | 10.4% | 13.6% | 12.0% |
| American Indian | 0.1% | 0.1% | 0.5% |
| Asian | 2.5% | 5.8% | 5.7% |
| Hawaiian | 0.0% | 0.0% | 0.2% |
| Other | 0.2% | 0.3% | 0.5% |
| Two Or More | 4.2% | 3.0% | 3.9% |
| Hispanic | 14.0% | 18.5% | 19.0% |
6.3% of households in Rock Island County earn Less than $10,000.
4.4% of households in Rock Island County earn $10,000 to $14,999.
7.5% of households in Rock Island County earn $15,000 to $24,999.
8.3% of households in Rock Island County earn $25,000 to $34,999.
12.3% of households in Rock Island County earn $35,000 to $49,999.
15.8% of households in Rock Island County earn $50,000 to $74,999.
14.9% of households in Rock Island County earn $75,000 to $99,999.
17.4% of households in Rock Island County earn $100,000 to $149,999.
7.8% of households in Rock Island County earn $150,000 to $199,999.
5.3% of households in Rock Island County earn $200,000 or more.
| Income | Rock Island County | IL | USA |
|---|---|---|---|
| Less than $10,000 | 6.3% | 5.2% | 4.9% |
| $10,000 to $14,999 | 4.4% | 3.4% | 3.6% |
| $15,000 to $24,999 | 7.5% | 6.2% | 6.6% |
| $25,000 to $34,999 | 8.3% | 6.5% | 6.8% |
| $35,000 to $49,999 | 12.3% | 9.9% | 10.4% |
| $50,000 to $74,999 | 15.8% | 15.1% | 15.7% |
| $75,000 to $99,999 | 14.9% | 12.7% | 12.7% |
| $100,000 to $149,999 | 17.4% | 17.9% | 17.4% |
| $150,000 to $199,999 | 7.8% | 9.9% | 9.3% |
| $200,000 or more | 5.3% | 13.1% | 12.6% |
3.0% of adults in Rock Island County completed < 9th grade.
6.0% of adults in Rock Island County completed 9-12th grade.
31.0% of adults in Rock Island County completed high school / ged.
25.0% of adults in Rock Island County completed some college.
11.0% of adults in Rock Island County completed associate's degree.
15.0% of adults in Rock Island County completed bachelor's degree.
7.0% of adults in Rock Island County completed master's degree.
1.0% of adults in Rock Island County completed professional degree.
1.0% of adults in Rock Island County completed doctorate degree.
| Education | Rock Island County | IL | USA |
|---|---|---|---|
| < 9th Grade | 3% | 5% | 5% |
| 9-12th Grade | 6% | 5% | 6% |
| High School / GED | 31% | 25% | 26% |
| Some College | 25% | 20% | 19% |
| Associate's Degree | 11% | 8% | 9% |
| Bachelor's Degree | 15% | 22% | 21% |
| Master's Degree | 7% | 11% | 10% |
| Professional Degree | 1% | 2% | 2% |
| Doctorate Degree | 1% | 2% | 2% |
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