The Jewish Community of Celle is a religious community rich in tradition, which was reestablished as a registered association in 1997. It has a liberal orientation and is a member of the Landesverband der israelitischen Kultusgemeinden von Niedersachsen and the Union of Progressive Jews in Germany. The community members live very scattered and most of them quite far away from Celle.

The Jewish community in Dornum existed over a period of about 300 years from its beginnings in the 17th century until its end on March 8, 1940. In 1925, the Jews in Dornum represented the highest percentage of the population in East Frisia with 7.3%. Jews first settled in the Dornum dominion after the Thirty Years' War, after the dominion owners were granted the privilege of issuing their own letters of protection by Count Rudolf Christian in 1626. From then on, the Jews participated in local life and were members of various village associations.

The Jewish community in Esens existed over a period of about 300 years from its beginnings in the 17th century until its end on July 31, 1941. The Harlingerland consisting of the old boroughs of Esens, Stedesdorf and Wittmund was an independent territory until its unification with the county of East Frisia in 1600. Jewish communities existed here only in Wittmund and Esens. The Jewish community of Wittmund seems to have been the oldest in Harlingerland. In any case, the Jews from Esens initially had to bury their dead in the Jewish cemetery in Wittmund.

The history of Jews in Hannover began in the 13th century.[1] In 2009, about 6200 people belonged to the four Jewish communities in Hannover.

The history of the city of Dillingen/Saar begins with the Gallo-Roman settlement Contiomagus, which existed at the crossroads of the long-distance roads Metz-Mainz and Trier-Strasbourg, in today's district of Pachten. In 275/276 Contiomagus was destroyed and rebuilt in the course of the migration of the peoples. 1324 the first documentary mention of Diefflen and 1357 the first mention of the Old Castle. Between 1618 and 1648 there was devastation during the Thirty Years' War. In 1685, Dillingen received permission from Louis XIV to establish ironworks at the gates of Saarlouis.

The Liberal Jewish Community Hannover K.d.ö.R. is the largest progressive Jewish community in Germany. It is based in its community center Etz Chaim (Hebrew עץ חיים 'Tree of Life') in the Leinhausen district of Hanover.

The Jewish community in Jemgum existed over a period of about 350 years from its beginnings in the 17th century until its end in February 1940.

The history of the Jewish community of Jever reached back to the first half of the 16th century. It ended with the destruction of its synagogue on Reichspogromnacht 1938 and the subsequent deportations of Jever's Jewish inhabitants. Of the 50 Jews still living in the Frisian district town in 1938, only 12 managed to save themselves by fleeing abroad.

The Jewish community in Leer existed over a period of about 300 years from its beginnings in the 17th century until its end on October 23, 1941.