[1] They were created from 1850 onwards, when the city area was enlarged by the inclusion of surrounding communities.
Since 2002, in Austria, instead of the police the mayors are responsible for objects found in public places.
The mayor of Vienna again has ordered the district offices of the Magistrat to perform these functions.
Optimizing overhead costs has gone farther with the Federal Police in Vienna.
Reducing the number of small districts by mergers, as happened in Berlin after the 1990 reunification of Germany, has not even been discussed in Vienna, since the district assemblies function as breeding factories for the political parties' representatives.