As changes under HR 1 take effect, an estimated 10 million of the nation’s 81 million Medicaid enrollees could lose coverage over the next decade. A new analysis from independent health policy research organization KFF examines Medicaid enrollment across U.S. congressional districts, highlighting significant differences in the number and share of residents who rely on the program.
According to KFF’s October 8, 2026, report, Medicaid enrollment ranges from approximately 52,900 people in Texas’ 24th Congressional District to 496,500 in New York’s 15th District. The analysis breaks down enrollment by eligibility group, including adults age 65 and older, people with disabilities, children and other adults.
The findings also highlight the role Medicaid plays in supporting older adults across the country. Congressional districts in California and New York had the 13 highest counts of older adult Medicaid enrollees in 2025, followed by districts in Florida.
Medicaid enrollment as a share of the population also varies considerably by district, reflecting differences in population and program participation. Districts in Georgia, Kansas and Texas had the lowest enrollment rates, at 7% of their populations, while one New York district had a rate exceeding 65%.
Find out Ohio’s percentages by exploring KFF’s interactive congressional district map and full analysis.