US Number of People with Medicaid Health Insurance Coverage By Age Group in 2021
Updated on October 18, 2025.
Based on the US Census ACS-5Yrs estimates, in 2021, there were 65,752,822 people in the United States with Medicaid Health Insurance Coverage (i.e. 20.24% of US population).
Among those with Medicaid health insurance coverage, 45.36% of them belonged to the Under 19 Years age group, 44.00% of them belonged to the 19 to 64 Years age group, and 10.64% of them belonged to the 65 Years and Over age group.
The chart below shows the percentage of the US population with Medicaid health insurance coverage, and the table below shows the number of people and the percentage.
You can see similar information for other types of health insurance coverages.
Related Topics: US Census 2021 Topic List.
Data Source: US Census - ACS 5-Year Estimates.
US Number of People with Medicaid Health Insurance Coverage By Age Group in 2021
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| Age | Num. of People with Medicaid Health Ins. | Percent of People With Medicaid Health Ins. (%) |
|---|---|---|
| Under 19 Years | 29827097 | 45.36 |
| 19 to 64 Years | 28929908 | 44.00 |
| 65 Years and Over | 6995817 | 10.64 |