Marketplace Enrollment
Marketplace Enrollment refers to the number of individuals who have selected or been automatically re-enrolled into a Qualified Health Plan (QHP) through the Health Insurance Marketplace for a given plan year. This includes both new enrollees and returning consumers. The Marketplace provides health insurance options primarily for individuals and families who do not have access to employer-sponsored insurance, Medicare, Medicaid (a means-tested program), or other qualifying coverage. The marketplace is open to eligible individuals of any age, however, the majority of enrollments are among those under age 65, as most people 65 and older qualify for Medicare.
Note: Data may be suppressed when counts are low. County-level 2026 Marketplace enrollment data are not available in this dataset for 20 states and the District of Columbia because they use State-Based Exchanges (SBEs) with separate reporting. State-level 2026 values may still be available. Historical county-level availability varies by state and year. These jurisdictions are: California, Connecticut, Kentucky, Maryland, Massachusetts, New York, Rhode Island, Vermont, Washington, Colorado, District of Columbia, Georgia, Idaho, Maine, Minnesota, Nevada, New Jersey, New Mexico, Pennsylvania, Virginia, and Illinois.
Source
Source Description
The Health Insurance Exchanges 2026 Open Enrollment Report summarizes data on health plan selections through the individual Exchanges during the 2026 Open Enrollment Period (OEP). The 2026 Marketplace Public Use Files include state-level data for all 50 states and the District of Columbia. County-level and ZIP Code-level Public Use Files include consumers with a plan selection in the 30 states that used the HealthCare.gov platform in 2026. The remaining 21 State-based Exchanges used their own eligibility and enrollment platforms.
Methodology
The 2026 Marketplace Open Enrollment Public Use Files (PUFs), published by the Centers for Medicare & Medicaid Services (CMS), provide summary data on health and dental plan selections during the 2026 Open Enrollment Period. HealthCare.gov Open Enrollment ran from November 1, 2025 through January 15, 2026 for the 30 states that used the HealthCare.gov platform. The remaining 21 State-based Exchanges (SBEs) used their own eligibility and enrollment platforms and had state-specific reporting periods.
The PUFs include information on Qualified Health Plan selections, consumer demographics, plan characteristics, financial assistance, enrollment status, metal level, household income as a percentage of the federal poverty level, and dental plan selections. State-level data are available for all 50 states and the District of Columbia. County-level and ZIP Code-level PUFs include consumers with a plan selection in the 30 states that used HealthCare.gov in 2026.
Analysis uses the downloadable CMS CSV/Excel Public Use Files. Current-year data are integrated with prior-year Marketplace enrollment data to support geographic comparisons, demographic breakouts, historical trends, and year-over-year enrollment change. CMS suppression and not-reported values are retained as unavailable rather than interpreted as observed zero enrollment.
Data Breakouts Available
- Marketplace Enrollment Percentage by Year, 2020 – 2026
- Change in Marketplace Enrollment (2025–2026)
- Marketplace Enrollment Number by Sex in 2026
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