The FAQ data series on American Jews is based upon comparative data initially compiled by Dr. Ira M. Sheskin for his Jewish community study reports and originally published by the DataBank in 2001 as How Communities Differ: Variations in the Findings of Local Community Studies.
Drs. Miller, Sheskin, Dashefsky and Kotler-Berkowitz have revised these tables for this online series, which is updated as new Jewish community studies are completed.
FAQ Number 1 summarizes estimates of Jewish communities which have had recent surveys that include an RDD (random digit dialed) component, or where the estimate of the number of Jewish persons is based on a series of RDD-based studies estimating the number of Jews-by-religion (JBR)
Table 1 organizes the Jewish communities alphabetically, summarizing the number of Jewish households, the number of Jewish persons and the total number of people living in the community's Jewish households, including non-Jewish persons.
Table 1a organizes the data by community size in descending order of the number of Jewish persons. The largest US Jewish community is the eight-county New York area with 1,538,000 Jews; the smallest community included based on RDD data is York, PA with 1,800 Jews. (Please note that non-RDD-based estimates are included in the articles on US Jewish Population Reports.)
Table 1b reports the percentage of all people living in Jewish households in the community who are Jewish in ascending order beginning with 57% in East Bay, CA through the 96% of household members who are Jewish in South Palm Beach.