American Jewish Population Project (Brandeis University, Steinhardt Social Research Institute)
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.
There is a lot of information available on the site without needing to register, including national estimates, infographics, and publications. Registering for the site will provide access to detailed (sub-national) estimates of the Jewish population. Data is available for Massachusetts, the Boston-Cambridge-Newton, MA-NH metro area, and for Suffolk County and as well as Boston suburbs.