Mapping, Public Opinion, & Data & Statistical Sources
Mapping / Visualization
Policy MapEasy-to-use online mapping and visualization tool. Downloadable U.S. demographic, economic and social data by city, state, zip code, county or census tract. Types of data include crime, housing, health, education and occupations, derived from both public and proprietary sources.
The Post’s data relies primarily on news accounts, social media postings and police reports. Analysis of more than five years of data reveals that the number and circumstances of fatal shootings and the overall demographics of the victims have remained relatively constant.
Roper Center Public Opinion ArchivesThe Roper Center is a public opinion archive that preserves the data from polls conducted by many leading survey organizations. Most of the data are from the United States, but over 50 nations are represented. The iPOLL databank offers access to nearly half a million survey questions and answers asked in the U.S. by more than 150 survey organizations. Direct links are given to study documentation and datasets. Date coverage: 1930s – present.