Ariyalur District came into existence by the bifurcation of Perambalur District as per G.O.(Ms)No.683 Revenue(RA1(1)) Department dated 19.11.2007. It is bounded on the North by Cuddalore, South by Thanjavur, East by Cuddalore and Thanjavur and West by Perambalur and Tiruchirapalli districts. Ariyalur has been functioning as a separate District since 23.11.2007
Vision
It is an inland district without any coast line. The District has Vellar River in the North and Kollidam River in the South and it has no well marked natural divisions.
Mission
Before the advent of the human activities in the area covered by the district, it was submerged under the Sea. Later, due to the changes in climatic conditions, the sea water receded towards the east and thus emerged the present land made metamorphic rocks belonging to the gneiss family.