Health Insurance Coverage: 7 Key Changes Americans Saw in 2020
Health Insurance Coverage: 7 Key Changes Americans Saw in 2020
Health insurance coverage in the United States improved slightly in 2020, according to data from the Centers for Disease Control and Prevention (CDC). The findings showed that fewer Americans were uninsured during a year marked by the COVID-19 pandemic, major economic disruption and significant changes in how people accessed healthcare.
The CDC’s National Center for Health Statistics reported that 31.6 million people of all ages, or 9.7% of the U.S. population, were uninsured in 2020. In 2019, the figure was 33.2 million people, or 10.3%. Although the number decreased, the CDC said the difference was not statistically significant.
The report offers an important picture of health insurance in America during one of the most unusual years in recent history. It also shows that insurance coverage was not distributed equally across age groups, income levels, racial and ethnic groups, and states.
1. Health Insurance Coverage Improved Slightly in 2020
The headline finding was a small decline in the number of uninsured Americans.
In 2020, 9.7% of people of all ages were uninsured at the time they were interviewed, compared with 10.3% in 2019. At the same time, 38.0% had public health coverage and 61.8% had private health insurance coverage.
The change was relatively modest, but it was notable because 2020 was dominated by the COVID-19 pandemic.
Millions of Americans experienced changes in employment, income and access to healthcare. Because many Americans receive health insurance through their jobs, employment disruptions created concerns about whether people would lose coverage.
The CDC data, however, did not show a statistically significant increase in the uninsured rate.
2. Adults Between 18 and 64 Faced the Biggest Coverage Gap
Age made a significant difference in health insurance coverage.
Adults between 18 and 64 were the group most likely to be uninsured in 2020. The CDC reported that 13.9% of adults in this age group had no health insurance.
By comparison, only 5.1% of children aged 0 to 17 were uninsured, while just 0.8% of adults aged 65 and older lacked coverage.
The difference is understandable because older Americans are generally eligible for Medicare, while children may qualify for Medicaid or the Children’s Health Insurance Program.
Working-age adults, meanwhile, often depend on employer-sponsored insurance, individual plans or public programs to maintain coverage.
This makes adults between 18 and 64 an important group when discussing healthcare affordability and access in the United States.
3. Private Insurance Remained the Largest Source of Coverage
Private health insurance continued to play a major role in the American healthcare system in 2020.
Among adults aged 18 to 64, 67.5% had private health insurance, while 20.5% had public coverage and 13.9% were uninsured.
Private coverage can come from several sources. The CDC includes comprehensive insurance provided through employers, insurance purchased directly and plans obtained through the Health Insurance Marketplace or state-based exchanges.
Compared with 2019, the percentage of working-age adults with private insurance increased slightly from 66.8% to 67.5%, although the CDC said the difference was not statistically significant.
This suggests that private insurance remained relatively stable despite the extraordinary economic conditions of 2020.
4. Public Health Insurance Covered Millions of Americans
Public programs also played an important role in maintaining health insurance coverage.
Across all age groups, 38.0% of Americans had public health coverage in 2020. Public coverage included programs such as Medicare, Medicaid, the Children’s Health Insurance Program and certain government-sponsored or military health plans.
Older Americans had particularly high levels of public coverage. The CDC reported that 95.9% of people aged 65 and older had public coverage.
Among children, 42.2% had public coverage, while 20.5% of adults aged 18 to 64 had public coverage.
These figures demonstrate how important government healthcare programs are to different groups within the U.S. population.
5. Millions Obtained Insurance Through Health Marketplaces
The Affordable Care Act’s health insurance marketplaces also contributed to coverage in 2020.
The CDC found that 8.6 million adults aged 18 to 64, representing 4.4% of this population, were covered by private health insurance plans obtained through the Health Insurance Marketplace or state-based exchanges.
Looking at people under 65 as a whole, 3.8% had exchange-based coverage in 2020.
These marketplaces provide an alternative for people who do not receive health insurance through an employer or another public program.
For workers who change jobs, work independently or do not have access to employer-sponsored insurance, marketplace plans can provide another route to coverage.
6. Income Was Closely Connected to Being Uninsured
One of the clearest findings in the CDC report involved household income.
Among adults aged 18 to 64, people with lower family incomes were considerably more likely to be uninsured.
In 2020, 25.3% of adults in families with incomes below 100% of the federal poverty level were uninsured. Among those with family incomes between 100% and less than 200% of the federal poverty level, the uninsured rate was 25.0%.
For adults in families with incomes at or above 200% of the federal poverty level, the rate was much lower, at 8.7%.
The figures highlight the strong relationship between financial circumstances and access to health insurance.
For many households, the cost of premiums, deductibles and other healthcare expenses can make insurance difficult to afford.
7. Medicaid Expansion States Had Lower Uninsured Rates
Where people lived also mattered.
The CDC found a substantial difference between adults living in states that had expanded Medicaid and those living in states that had not.
Among adults aged 18 to 64, 20.8% of people living in states without Medicaid expansion were uninsured, compared with 10.2% in states that had expanded Medicaid.
That means adults in non-expansion states were more than twice as likely to be uninsured in the CDC’s 2020 data.
Medicaid expansion had therefore become an important part of the broader debate over healthcare access and insurance coverage in the United States.
Health Insurance Coverage Also Varied by Race and Ethnicity
The CDC report showed that insurance coverage was not equal across racial and ethnic groups.
Among adults aged 18 to 64 in 2020, 29.3% of Hispanic adults were uninsured. The corresponding figures were 14.6% for non-Hispanic Black adults, 9.2% for non-Hispanic White adults and 8.8% for non-Hispanic Asian adults.
The differences point to broader issues involving income, employment, access to public programs, geography and healthcare affordability.
Looking at insurance statistics by population group is therefore important because an overall national figure can hide significant differences between communities.
The COVID-19 Pandemic Made the 2020 Data Unusual
The 2020 health insurance figures should also be viewed in the context of the pandemic.
The CDC noted that its National Health Interview Survey had to change its data collection procedures because of COVID-19. Beginning March 19, 2020, interviews switched to a telephone-only mode, which resulted in lower response rates and differences in respondent characteristics during part of the year.
The CDC therefore warned that some differences between 2020 and earlier years could have been affected by changes in the survey process.
This does not make the findings unusable, but it is an important reminder that health statistics need to be interpreted carefully.
The 2020 report was also an early-release report based on preliminary data. The CDC noted that previous differences between preliminary and final data had generally been less than 0.1 percentage point.
Why Health Insurance Coverage Matters
Health insurance is more than a statistic.
Having coverage can affect whether people seek medical care when they need it, whether they can afford treatment and whether unexpected medical bills create serious financial pressure.
People without insurance may delay appointments, avoid preventive care or face the full cost of medical services.
At the same time, having insurance does not automatically mean that healthcare is affordable. Premiums, deductibles, copayments, prescription costs and limitations on coverage can still create financial challenges.
That is why discussions about healthcare often go beyond simply asking how many people have insurance.
The quality and affordability of that coverage also matter.
What the 2020 Numbers Tell Us About American Healthcare
The CDC findings provide several important lessons.
First, the United States had a large insured population even during the disruption caused by the pandemic. Second, millions of people remained without coverage. Third, insurance access varied considerably according to age, income, race and ethnicity, and the Medicaid policies of individual states.
The figures also show why public and private insurance programs both matter.
Private insurance remained the dominant form of coverage for working-age adults, while public programs provided extensive coverage to older Americans, children and other groups.
The Affordable Care Act’s marketplaces also provided coverage to millions of people.
At the same time, the relatively high uninsured rates among lower-income adults demonstrated that coverage gaps remained a major challenge.
A Look Beyond 2020
Although this report focuses on 2020, the issue of health insurance coverage has continued to evolve.
The CDC’s National Health Interview Survey remains an important source for tracking insurance coverage in the United States. The survey collects information on health insurance status, the type of coverage people have and reasons why some people remain uninsured.
More recent CDC data show that the uninsured rate has changed since the pandemic period. For example, the CDC reported that the percentage of adults aged 18 to 64 who were uninsured fell from 13.9% in 2020 to 11.1% during the first six months of 2024.
This makes the 2020 figures useful not only as a historical snapshot, but also as a reference point for understanding how American healthcare coverage has changed.
Conclusion
The CDC’s 2020 data showed a modest improvement in health insurance coverage across the United States, with the number of uninsured people falling from 33.2 million in 2019 to 31.6 million in 2020. However, the CDC cautioned that the difference was not statistically significant.
Behind the national figure were major differences between groups. Working-age adults were more likely to be uninsured than children or older adults. Lower-income households faced much higher uninsured rates, while adults in Medicaid expansion states had substantially better coverage rates than those in non-expansion states.
The findings demonstrate that measuring health insurance coverage requires more than looking at a single national percentage. Age, income, race, employment, geography and government policy all play a role in determining whether Americans have access to health insurance.
The 2020 report remains an important snapshot of American healthcare during an extraordinary year—and a useful starting point for understanding the country’s continuing debate over affordable and accessible healthcare.
