Cook County, IL

County in Illinois, Midwest · ranked on 55 metrics

Rank among US counties

Cook County, IL is a county in Illinois with a population of 5,200,459 (2nd of 3,094). It ranks best for Bachelor’s Degree or Higher (% of Adults 25+) (205th of 3,094), Adults with Obesity (%) (tied 269th of 2,916), Median Household Income (467th of 3,093). It ranks lowest for Average Commute (Minutes) (2,768th of 3,094), Median Home Value (Capped at $2M) (2,582nd of 3,092), Unemployment Rate (%) (tied 2,337th of 3,094).

Population
5.2M
2nd highest of 3,094
Density
5,503.1
18th highest of 3,094
Growth since 2020
-1.2%
2,186th highest of 3,094
Area
945
739th highest of 3,094
Region
Midwest
Illinois

At a glance

Median household income
$83,498
467th highest of 3,093
Median home value
$324,500
511th highest of 3,092
Median rent
$1,435
284th highest of 3,090
Unemployment
4.8%
678th highest of 3,094
Poverty rate
13.5%
1,481st highest of 3,094
College degree
42.7%
205th highest of 3,094
Adult obesity
31.0%
2,644th highest of 2,916
No health insurance
12.0%
1,000th highest of 2,916
Average commute
31 minutes
327th highest of 3,094
Home broadband
90.6%
684th highest of 3,094
Climate
50.2°F average
24°F in January, 74°F in July
2024 presidential vote
Democratic +42.0
28.4% Republican, 70.4% Democratic

Strengths and weak spotsPercentileWhere a place sits among all places, from 0 to 100. 100 is the best, 50 is the middle, 0 is the worst.More in the glossary →

Percentile on 22 metrics that rank at least half of all US counties, given whether higher or lower is better.

Totals that track populationCounts like “number of burglaries” that mostly reflect how many people live somewhere, so big places rank high or low regardless.More in the glossary →

Best at

Highest percentiles, given whether higher or lower is better

  1. Adults with Frequent Mental Distress (%)15.4%
    Health of Adults by County (CDC PLACES) · 2023
    tied 162nd of 2,916
  2. Adults Who Smoke (%)11.2%
    Health of Adults by County (CDC PLACES) · 2023
    tied 180th of 2,916
  3. Adults with Depression (%)19.0%
    Health of Adults by County (CDC PLACES) · 2023
    tied 187th of 2,916
  4. Bachelor’s Degree or Higher (% of Adults 25+)42.7%
    Housing, Income and Commutes by County (Census) · 2024
    205th of 3,094
  5. Adults with Obesity (%)31.0%
    Health of Adults by County (CDC PLACES) · 2023
    tied 269th of 2,916
  6. Median Household Income$83,498
    Housing, Income and Commutes by County (Census) · 2024
    467th of 3,093
  7. Adults with No Leisure-Time Exercise (%)22.8%
    Health of Adults by County (CDC PLACES) · 2023
    tied 620th of 2,916
  8. Homes with Broadband Internet (%)90.6%
    Housing, Income and Commutes by County (Census) · 2024
    684th of 3,094
  9. Median Income$83,498
    Poorest Counties
    467th of 2,000
  10. Cooling Degree Days per Year833
    Climate by County (1991–2020 Averages)
    tied 1,089th of 3,050

Worst at

Lowest percentiles, given whether higher or lower is better

  1. Median Rent (Monthly, Capped at $3,501)$1,435
    Housing, Income and Commutes by County (Census) · 2024
    2,807th of 3,090
  2. Average Commute (Minutes)31.5
    Housing, Income and Commutes by County (Census) · 2024
    2,768th of 3,094
  3. Median Home Value (Capped at $2M)$324,500
    Housing, Income and Commutes by County (Census) · 2024
    2,582nd of 3,092
  4. Unemployment Rate (%)4.8%
    Unemployment Rate by County (BLS) · 2025
    tied 2,337th of 3,094
  5. Adults Who Binge Drink (%)19.0%
    Health of Adults by County (CDC PLACES) · 2023
    tied 2,059th of 2,916
  6. Heating Degree Days per Year6,207
    Climate by County (1991–2020 Averages)
    tied 2,163rd of 3,050
  7. Adults 18–64 Without Health Insurance (%)12.0%
    Health of Adults by County (CDC PLACES) · 2023
    tied 1,891st of 2,916
  8. Poverty Rate (%)13.5%
    Housing, Income and Commutes by County (Census) · 2024
    1,614th of 3,094
  9. Adults with Diabetes (%)10.7%
    Health of Adults by County (CDC PLACES) · 2023
    tied 1,416th of 2,916
  10. Adults in Fair or Poor Health (%)18.7%
    Health of Adults by County (CDC PLACES) · 2023
    tied 1,128th of 2,916

Profile by category

Average percentile per category, from the median line. Select a category to list its metrics.

Strongest category Health (68), weakest Economics (49). Select a category to list its metrics.

Notable facts

Where it ranks first or last among US counties

Never first or last on a widely ranked metric.

Where it is

Shaded by population; select a place to open it

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Similar places

Closest percentiles on 23 widely reported measures from 7 categories, leaving out size and totals

  1. Baltimore County, MD85% similar
    Compared on 21 of 23
  2. Cuyahoga County, OH85% similar
    Compared on 20 of 23
  3. Philadelphia County, PA82% similar
    Compared on 17 of 23
  4. Marion County, IN81% similar
    Compared on 20 of 23
  5. Bernalillo County, NM81% similar
    Compared on 18 of 23

Quick answers

What is the population of Cook County, IL?
Cook County, IL has a population of 5,200,459, 2nd among 3,094 US counties.
What does Cook County, IL rank best at?
Among US counties, Cook County, IL ranks best for Bachelor’s Degree or Higher (% of Adults 25+) (205th of 3,094); Adults with Obesity (%) (tied 269th of 2,916); Median Household Income (467th of 3,093).
Where does Cook County, IL rank worst?
Cook County, IL ranks lowest for Average Commute (Minutes) (2,768th of 3,094); Median Home Value (Capped at $2M) (2,582nd of 3,092); Unemployment Rate (%) (tied 2,337th of 3,094).
How many statistics does Rankodex have for Cook County, IL?
Rankodex ranks Cook County, IL on 55 statistics compared with other US counties, compiled from World Population Review and the sources it cites.

Every metric

55 metrics with a value for this place, in 17 topics