Wikipedia
Mariahilf
Mariahilf is the 6th municipal district of Vienna, Austria ( German: 6. Bezirk). It is near the center of Vienna and was established as a district in 1850. Mariahilf is a heavily populated urban area with many residential buildings.
Wien.gv.at webpage (see below: References).
Vienna Districts data, wien.gv.at, 2008, webpage:
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It has a population of within an area of .