Oldenburg – Ammerland was created in 1949. In the 1949 election, it was Lower Saxony constituency 8. For the 1953 through 1961 elections, it was constituency 30 in the numbering system. From 1965 through 1998, it was constituency 22; from 2002 through 2009, it was constituency 28. Since the 2013 election, it has been constituency 27. Originally, it comprised the city of Oldenburg and the district of Ammerland. At this time, it was named
Oldenburg. In the 1965 election, the constituency gained the municipalities of
Bockhorn, Neuenburg,
Sande,
Varel, Varel-Land, and
Zetel. Due to administrative reforms, in the 1976 election, it gained the municipality of Gödens. In the 1980 election, the constituency was renamed to
Oldenburg – Ammerland, and lost the municipality of Sande. The municipalities of Bockhorn, Varel, and Zetel also removed from the constituency in the 2002 election. ==Members==