The Pew Research Center wishes to acknowledge the Peter G. Peterson Foundation, which included Center staffers in early deliberations on the US 2050 initiative, provided access to abstracts and early drafts of research reports, and provided valuable advice in developing the questionnaire.

This report is a collaborative effort based on the input and analysis of the following individuals. Find related reports online at

Kim Parker, Director, Social Trends Research
Juliana Horowitz, Associate Director, Research
Rich Morin, Senior Editor
Ruth Igielnik, Senior Researcher
Nikki Graf, Research Associate
Anna Brown, Research Analyst
Anthony Cilluffo, Research Assistant
Deja Thomas, Research Assistant
Claudia Deane, Vice President, Research
Jessica Pumphrey, Communications Associate
Michael Keegan, Information Graphics Designer
James Dryden (courtesy ServiceScape), Copy Editor
Travis Mitchell, Digital Producer

In addition, the project benefited greatly from the guidance of the Pew Research Center methodology team: Courtney Kennedy, Andrew Mercer, Nick Bertoni, Nick Hatley and Arnold Lau, and from feedback provided by the following Pew Research Center researchers: Mark Lopez and Jeffrey Passel.