This holiday season, see who's celebrating what with Social Explorer.  In addition to 220 years of nationwide demographic data from the Census and the American Community Survey, Social Explorer lets you explore data on religious adherents nationwide from 1980 to 2000.

This data comes from the Religious Congregations and Membership Study (RCMS), which is the most complete census available on religion in the United States.

For instance, on this, the seventh night of Hanukkah, you can see who might be lighting their menorahs, and how the Jewish population has changed since 1990.  (In 1980, the survey's coverage of the Jewish synagogues and other non-Christian religions was incomplete.)

According to the 1990 survey, there were 5,982,529 Jews in the U.S., representing 2.41 percent of religious adherents.  By 2000, the number of Jews increased to 6,141,325, but while the overall number of Jews increased, the proportion of Jewish religious adherents decreased to 2.18 percent.

Click here to start exploring data on 149 religions groups and denominations.