This report represents the most current and comprehensive investigation of asthma prevalence conducted in the New England (NE) region. It examines the health, socioeconomic, behavioral, and environmental predictors that relate to adult and child asthma in the six states (Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island, and Vermont). It was produced by the New England Asthma Regional Council (ARC), a coalition of public agencies, private organizations and researchers working together to address the environmental contributors to asthma (www.asthmaregionalcouncil.org). This report, which follows an earlier study conducted by ARC on 2001 asthma rates, uses data obtained from both the 2003 National Survey of Children’s Health (n=12,026) and the 2004 Behavioral Risk Factor Surveillance System (BRFSS; n=33,618) providing a richer, more comprehensive picture of the disease as it manifests itself amongst both children and adults in the region.