Coverage Atlas

A source-backed reference atlas of the ACA health-insurance marketplace. Every figure traces to the CMS ACA Plan Attributes Public Use File. We inform and compare which plans exist — we do not sell, rank, or recommend plans, and we provide no advice.

Currently covering 20,670 medical plans and 1,389 standalone dental plans across the 30 states on the federal HealthCare.gov marketplace (2026 plan year).

States that run their own ACA exchange (California, New York, and others) publish plan data separately and are not in this federal CMS dataset.

Machine-readable orientation for agents: /llms.txt · /llms-full.txt · each state page has a /context.md brief.