Pew Research Center

The page provides detailed methodology for Pew Research Center international surveys, including interview modes, sampling design, and error margins by country, survey, and year.

Total U.S. Puerto Rican population mapped by county in 1980, 1990, 2000 and 2013.

The Religious Landscape Study is a comprehensive survey of more than 35,000 Americans' religious identities, beliefs and practices that's been conducted in 2007, 2014 and 2023-24. Pew Research Center.

A Pew Research Center survey found that Americans view eight of 12 federal agencies more favorably than unfavorably, with the National Park Service, National Weather Service, and U.S. Postal Service receiving particularly positive ratings.

U.S. refugee admissions have dropped sharply in Trump’s second term, with just over 10,000 so far in fiscal 2026, down from about 38,000 in fiscal 2025.

A 36-country survey finds declining ratings for the U.S. amid rising concerns about its foreign policy and the health of its democracy.

Democratic candidates now hold an 8 percentage point edge over Republican candidates in preferences for the House of Representatives among all registered voters nationally.

About six-in-ten Americans say countries around the world, including the U.S., will not do enough to avoid the worst effects of climate change. This growing pessimism is driven by Democrats.

Democratic congressional candidates have a sizable advantage among Latino registered voters. And Latino Democratic candidate supporters are more engaged with this year’s election compared with four years ago.

Many Americans use social media for news: About a fifth or more regularly get news on Facebook, YouTube, Instagram and TikTok.

The page explains the methodology and purpose of the 2023-24 Religious Landscape Study, which measures Americans’ religious identities, beliefs, and practices.

The page presents data-driven insights on global trends and issues.