The area fell to Prussia in 1815, which in 1816 created the three districts Heinsberg, Erkelenz and Geilenkirchen. In 1932 the districts Heinsberg and Geilenkirchen were merged, and in 1972 the Erkelenz district was merged as well. In 1975 the district got its present size when the municipality Niederkrüchten was moved to the district Viersen.