The Yale Climate Opinion Maps track public opinion among adults (defined as age 25 and older) on their “particular beliefs, attitudes, and policy preferences about global warming”. The series of 14 maps tracks the percentage of US residents on their climate change beliefs, risk perceptions, and policy support for regulations.
The statistical estimates about the public perception among adults was developed from the results of more than 13,000 individuals that were surveyed between 2008 and 2014. The researchers estimated the margin of error for each level: average margin of error of +/-5 percentage points at the state level, +/-7 percentage points at the congressional district level and +/-8 percentage points at the county level. The results of the research was recently published in Nature Climate Change.
The maps can be viewed at the national, state, congressional district, and county levels. To explore the maps and data visit the Yale Climate Opinion Maps.
Overall, the study found that 63% of Americans believe that global warming is happening. A map view of this belief on the county level shows that the percentage varies greatly from county to county.
Howe, P., Mildenberger, M., Marlon, J., & Leiserowitz, A. (2015) “Geographic variation in opinions on climate change at state and local scales in the USA,” Nature Climate Change. DOI: 10.1038/nclimate2583.