Carlstadt has an area of 0.46 km². It is the smallest borough of Düsseldorf. Its economical life is mainly based on upper class shops. One of the three European central offices of Vodafone is in Carlstadt.
The Heinrich Heine Institute and the Robert Schumann Society are in Carlstadt. Clara and Robert Schumann lived for a couple of years in Carlstadt.
Well-known is the Carlsplatz, the central market place of Düsseldorf in Carlstadt.