In 1827 a small district around the city of Euskirchen was made. In 1932 the district of Rheinbach was split up. Euskirchen district got the southern part of Rheinbach. In 1972 the Euskirchen district grew again because the district of Schleiden wa sput into Euskirchen rural district.
The coat of arms shows the four signs of the main historical territories or rulers of the district. Top-left are the roses of the counts of Arenburg, top-right the lion of Jülich, bottom-right the wavy-line of the counts of Manderscheid-Blankenheim, and bottom-left the Cologne cross.