News Release

New Interactive Map with Local Data: Estimated 2016 ACA Marketplace Enrollment by Congressional District

Additional Interactive Maps Chart Medicaid Expansion Enrollees by State

As the 115th U.S. Congress deliberates the future of the Affordable Care Act, a new interactive map from the Kaiser Family Foundation provides estimates of the number of people in each congressional district who enrolled in a 2016 ACA marketplace health plan and the political party of each district’s representative as of January.

The analysis, Interactive Maps: Estimates of Enrollment in ACA Marketplaces and Medicaid Expansion, finds that of 11.5 million ACA marketplace enrollees nationally as of March 31, 2016, 6.3 million live in districts with a Republican representative and 5.2 million live in districts represented by a Democrat.

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The analysis also includes maps charting by state the total number of people enrolled under the ACA Medicaid expansion in 2015, along with the political parties of the governors and U.S. senators. Among states that adopted the Medicaid expansion as of January 2017, 16 have Republican governors, 14 have Democratic governors, and one has an Independent governor. In Washington, D.C., which also expanded Medicaid, the mayor is a Democrat.

All three maps can be embedded in web sites.

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The independent source for health policy research, polling, and news, KFF is a nonprofit organization based in San Francisco, California.