State rank#14 of 102
Smallest county142,757 residentsCook County
Published county profile · Official data · FIPS 17161
Rock Island County, Illinois
County-level income, housing, jobs, education, health, and population with transparent statewide comparisons and source periods.
Population142,757
Household income$67,159
Unemployment5.5%
Life expectancy76.4 years
County overview
Living metrics at a glance
Rock Island County has 142,757 residents and ranks #14 by population among Illinois county equivalents. Median household income is $67,159. The annual-average unemployment rate is 5.5%. Its clearest relative strength is poor or fair health. Its county population is above the state county median. Every figure below stays at county scope.
Within Illinois
County population range
The marker places this county between the smallest and largest county populations in the state.
Relocation guide
Moving to Rock Island County: what to check
Data narrows the search; municipality, neighborhood, commute, schools, and current listings complete the decision.
Before moving
Before moving, compare municipalities inside Rock Island County, because county averages do not describe every neighborhood. Review current housing inventory, commute destinations, school districts, healthcare access, and job locations. Its clearest relative strength is poor or fair health.
Cost and housing
Housing benchmarks are $150,400 median home value and $889/mo median gross rent. Set those costs against a median household income of $67,159, while remembering that household circumstances and municipalities vary.
Who it may suit
Rock Island County may be worth a closer look for movers prioritizing poor or fair health, bachelor’s degree or higher, and mental health access. College attainment is 24.7% and life expectancy is 76.4 years.
Potential advantages
- Poor or fair health: 16.5%, rank #26 of 102 available Illinois counties.
- Bachelor’s degree or higher: 24.7%, rank #32 of 102 available Illinois counties.
- Mental health access: 1 per 334 residents, rank #31 of 97 available Illinois counties.
Trade-offs to check
- Unemployment rate: 5.5%, rank #92 of 102; investigate local variation before moving.
- Uninsured: 7.4%, rank #90 of 102; investigate local variation before moving.
- Median gross rent: $889/mo, rank #73 of 102; investigate local variation before moving.
Income, housing, jobs, education & health
County metrics within Illinois
Rank and range use only counties in Illinois with that field available. A lower rank number is stronger when the metric has a clear direction.
Median household income
$67,159
$67,159; above the state county median of $66,532.
State rank #50 of 102 · U.S. Census Bureau — American Community Survey
Median home value
$150,400
$150,400; above the state county median of $134,650.
State rank #64 of 102 · U.S. Census Bureau — American Community Survey
Median gross rent
$889/mo
$889/mo; above the state county median of $811/mo.
State rank #73 of 102 · U.S. Census Bureau — American Community Survey
Unemployment rate
5.5%
5.5%; above the state county median of 4.6%.
State rank #92 of 102 · U.S. Bureau of Labor Statistics — Local Area Unemployment Statistics
Bachelor’s degree or higher
24.7%
24.7%; above the state county median of 20.9%.
State rank #32 of 102 · U.S. Census Bureau — American Community Survey
Life expectancy
76.4 years
76.4 years; above the state county median of 75.9 years.
State rank #44 of 102 · County Health Rankings & Roadmaps
Poor or fair health
16.5%
16.5%; below the state county median of 18%.
State rank #26 of 102 · County Health Rankings & Roadmaps
Uninsured
7.4%
7.4%; above the state county median of 6%.
State rank #90 of 102 · County Health Rankings & Roadmaps
Primary care access
1 per 2,042 residents
1 per 2,042 residents; below the state county median of 1 per 2,412 residents.
State rank #33 of 94 · County Health Rankings & Roadmaps
Mental health access
1 per 334 residents
1 per 334 residents; below the state county median of 1 per 528 residents.
State rank #31 of 97 · County Health Rankings & RoadmapsCommon questions
Rock Island County FAQ
Is Rock Island County a good place to live?
Rock Island County may be worth a closer look for movers prioritizing poor or fair health, bachelor’s degree or higher, and mental health access. College attainment is 24.7% and life expectancy is 76.4 years.
What should I know before moving to Rock Island County?
Start with housing, employment, commute, schools, healthcare access, and the specific municipality. Housing benchmarks are $150,400 median home value and $889/mo median gross rent. Set those costs against a median household income of $67,159, while remembering that household circumstances and municipalities vary.
What is the population of Rock Island County?
Rock Island County has 142,757 residents in the 2020–2024 ACS 5-year dataset.
What is the FIPS code for Rock Island County?
The five-digit county FIPS code is 17161; the parent state FIPS is 17.
What is the median household income in Rock Island County?
The ACS median household income is $67,159.
How much does housing cost in Rock Island County?
Housing benchmarks are $150,400 median home value and $889/mo median gross rent. Set those costs against a median household income of $67,159, while remembering that household circumstances and municipalities vary.
What is the unemployment rate in Rock Island County?
The BLS LAUS annual-average unemployment rate is 5.5%.
Similar population
Nearby counties in the state ranking
Source and gate
Methodology and source periods
All records join by five-digit FIPS. Profiles publish when ACS county population is at least 100,000 or the county is the state’s largest. Missing source values remain unavailable and are excluded from ranks. Runtime data was generated 2026-07-26.
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