The following is a report compiled by The Bureau of Jewish Social Research on Jewish statistics that are based largely on estimates made prior to World War I. Within this report, the population figures for countries that were not affected by war are repeated as given in the previous issue of the previous Year Book. However, this report, unlike the one found in Year Book 21, takes into account boundary shifts due to post-World War I treaties, and new political subdivisions. On a more substantive level, then, the first section of the report deals with the "Jewish Population of the World," which includes detailed lists of the number of Jews residing in many of the world's countries. The second section, which deals with American Jewry, delves into the number of Jews per state, the number of Jews per region, a list of the leading cities in Jewish population, and a list of all American cities that are home to more than a thousand Jews, among other interesting charts. Then, the report examines Jewish immigration in a quantitative fashion, with lists of Jewish immigrants per year, immigrant deportations, and immigrant admissions and departures, among other topics covered, and finally the report concludes with a look at Jewish immigration into Canada.