The McHenry County Jewish Congregation (MCJC) is a conservative synagogue that also offers religious education for K-12 and adult education programs. Located on the back roads of Crystal Lake with farmland as its backyard, MCJC is affiliated with the United Synagogue of Conservative Judaism and has been serving McHenry County Jews and interfaith families since 1979. Currently, Rabbi Maralee Gordon leads a congregation of approximately 100 families.