In 1974 the towns of Rethen/Leine (8.100 inh.), Gleidingen (4.300 inh.) and Ingeln-Oesselse (3.700 inh.) were added to the city.
1974年、町はRethen/Leine (8.100 inh.), Gleidingen (4.300 inh.)とIngeln-Oesselse (3.700 inh.)が加えられた。