The prevalence and care management of multiple (two or more) chronic conditions (MCC) are important public health concerns (1). Approximately 25% of U.S. adults have diagnoses of MCC (2). Care management of MCC presents a challenge to both patients and providers because of the substantial costs associated with treating more than one condition and the traditional care strategies that focus on single conditions as opposed to enhanced care coordination (3,4). Maintaining surveillance, targeting service delivery, and projecting resources are all important to meet this challenge, and these actions can be informed by identifying state and other regional variations in MCC prevalence (5,6). Data from the 2014 National Health Interview Survey (NHIS) were used to estimate prevalence of MCC (defined as two or more of 10 diagnosed chronic conditions) for each U.S. state and region by age and sex. Significant state and regional variation in MCC prevalence was found, with state-level estimates ranging from 19.0% in Colorado to 38.2% in Kentucky. MCC prevalence also varied by region, ranging from 21.4% in the Pacific region to 34.5% in the East South Central region. The prevalence of MCC was higher among women than among men within certain U.S. regions, and was higher in older persons in all regions. Such findings further the research and surveillance objectives stated in the U.S. Department of Health and Human Services (HHS) publication, Multiple Chronic Conditions: A Strategic Framework (1). Furthermore, geographic disparities in MCC prevalence can inform state-level surveillance programs and groups targeting service delivery or allocating resources for MCC prevention activities.