In 1816, the new Prussian government created the district of Kempen. Originally belonging to the Regierungsbezirk Kleve, it was dissolved in 1822, and since then has belonged to Düsseldorf. In 1929 the district was enlarged significantly and renamed Kempen-Krefeld.
In 1975 the district again changed its borders and was renamed Viersen even though Kempen remained the capital. Viersen city replaced Kempen as the capital in 1984.
The district is located in the lowlands between the Rhine and the Meuse river. Highest elevation is at Süchtelner Höhen with 90.7 m, with the lowest at Pielbruch with 28.6 m.
Coat of arms
At the top of the coat of arms is the black cross of the Cologne bishops, as the district used to belong to the clerical state Cologne. The golden lion on blue ground is the symbol of the duchy of Guelders; the black lion on golden ground the symbol of the duchy of Jülich.