http://www.pewresearch.org/fact-tank/2015/07/28/15-of-americans-dont-use-the-internet-who-are-they/?utm_content=bufferc7602&utm_medium=social&utm_source=twitter.com&utm_campaign=buffer

The latest Pew Research analysis also shows that internet non-adoption is correlated to a number of demographic variables, including age, educational attainment, household income, race and ethnicity, and community type.