Percentages may not sum to 100% due to rounding effects and the exclusion of a small percentage of Medicare enrollees under the age of 19.
Includes beneficiaries dually enrolled in Medicare and Medicaid.

For current Medicare enrollment figures, please refer to the Medicare section, which reports administrative data from the Centers for Medicare and Medicaid Services (CMS).
For more details, see "Notes to Topics Based on the Current Population Survey (CPS)" at http://www.statehealthfacts.kff.org/methodology.

Urban Institute and Kaiser Commission on Medicaid and the Uninsured estimates based on the Census Bureau's March 2008 and 2009 Current Population Survey (CPS: Annual Social and Economic Supplements).

NSD: Not sufficient data.

Persons in poverty are defined here as those living in "health insurance units" with incomes less than 100% of the Federal Poverty Level (FPL) as measured by the U.S. Census Bureau's poverty thresholds. Health insurance units are related individuals who would be eligible as a group for "family" coverage in a health plan. The federal poverty threshold for a family of four in the 48 contiguous states and D.C. was $21,027 in 2007 and $21,834 in 2008. The U.S. Department of Health and Human Services (HHS) produces simplified - but very similar - versions of federal poverty thresholds called "poverty guidelines" for use in determining financial eligibility for many government programs. For more information on measures of poverty, please see the detailed description provided by HHS available at http://aspe.hhs.gov/poverty/faq.shtml.