HealthPlanIndex (866) 843-0930
HealthPlanIndex is not a government website and is not affiliated with, endorsed by, or operated by HealthCare.gov, the Centers for Medicare & Medicaid Services, or any state health insurance exchange.

Health insurance in Cook County, Illinois

213,547 people here have no coverage and earn in the range a premium tax credit is built for — 50% of everyone uninsured in the county.

Reviewed September 4, 2026 · 2024 Census data

213,547Uninsured, subsidy range 138–400% of poverty
10.1%Uninsured, under 65 424,432 people
9.7%Uninsured, 50 to 64 88,400 people
4,207,927Under-65 residents 3rd of 3,143

Source: US Census Small Area Health Insurance Estimates, 2024 release. Income bands are measured against the federal poverty level.

Half the uninsured here sit in the subsidy range

213,547 people here are uninsured and inside the premium tax credit range — 50% of everyone uninsured in Cook County, and one of the largest such populations in the country. That is near the 51% national median. Within that band itself, 13.9% have no coverage.

How many people here have no coverage

10.1% of Cook County's 4,207,927 under-65 residents have no health coverage — 424,432 people. That is above the Illinois rate of 8.1%, and puts Cook County in the upper half of the 3,143 counties measured nationally (1,480th).

Who falls under the Medicaid line

126,250 of Cook County's uninsured — 30%, close to the 31% typical nationally — earn under $22,025 a year, which in Illinois is Medicaid territory rather than marketplace territory.

The years before Medicare

88,400 people aged 50 to 64 in Cook County have no coverage, a rate of 9.7% — close to the 10.1% across all under-65 residents here. Age-rated premiums make this the most expensive group to cover before Medicare.

Cook County against Illinois

Cook County is the largest of the 18 Illinois counties we publish, by under-65 population. Its uninsured rate runs 2.0 points higher than Illinois overall and its subsidy-band share matches the state. Coverage among 50 to 64 year olds is worse here than across Illinois.

Cook CountyIllinois National median
Uninsured, under 6510.1% 8.1%9.8%
Uninsured in the subsidy band213,547 423,655—
Subsidy band as a share of uninsured50% 51% 51%
At or below 138% of poverty30% 28% 31%
Uninsured, 50 to 649.7% 7.2% 8.1%

The next largest counties

CountyUninsured In the subsidy bandShare
DuPage County6.1%23,56951%
Will County6.4%19,41451%
Lake County7.5%22,46452%
Kane County8.9%20,77354%

What a plan actually costs in Cook County

These figures say how many people here a credit would reach. What it would be worth to you depends on your age, household and income — a licensed agent can work that out on the call.

(866) 843-0930

9am – 6pm, Monday through Friday, Eastern time. Closed Saturdays and Sundays.
You reach Clearline Health Insurance, a licensed insurance agency. There is no cost to call.

When you call the number on this site you reach Clearline Health Insurance (National Producer Number 19024830), a licensed insurance agency. HealthPlanIndex is compensated for that connection. That is how this site is paid for, and it does not change what you pay for a plan.

All Illinois counties · How the credit works · Enrollment dates

(866) 843-0930 9am–6pm ET, Mon–Fri