Objectives: To estimate the economic value from a societal perspective of informal caregiving of persons with dementia in 38 states, the District of Columbia, and Puerto Rico.; Methods: Using a cost replacement method and data from the 2015 and 2016 Behavioral Risk Factor Surveillance System caregiver module, the US Bureau of Labor and Statistics May 2016 Occupation Profiles, and the US Department of Labor, we estimated the number and economic direct cost of caregiving hours.; Results: An estimated 3.2 million dementia caregivers provided m