Maurice and Marilyn Cohen Center for Modern Jewish Studies (CMJS) at Brandeis University.
"The American Jewish Population Project is an innovative effort to estimate and map the Jewish population in the United States. Our work entails synthesizing data from hundreds of national surveys of US adults to develop detailed demographic and geographic profiles of the US Jewish population." About Us, AJPP https://ajpp.brandeis.edu/aboutajpp.
Includes: Historic Jewish Population; Countries with the Largest Jewish Population; and Jewish Population By Region (North America, Central America, South America, Asia, Oceana, Africa, Europe.)
Table of Contents includes reports categorized as: Anti-Semitism, Israel, Israel Defense Forces, The Holocaust, Demography, Terrorism, U.S.-Israel Bilateral Cooperation, and Public Opinion.
The World Religion Database contains detailed statistics on religious affiliation for every country of the world. It provides source material, including censuses and surveys, as well as best estimates for every religion for the period 1900 to 2050.