Prior to 2021, the municipality consisted of the following villages: Alderi, Atari, Āņi, Baltezers, Birznieki, Garkalne, Kadaga, Stapriņi, Divezeri, Iļķene, Eimuri.

A notable geographical feature is the Gauja River, which flows into the Gulf of Riga within the borders of the municipality.

Eventually, a design by Edgars Sims was selected, featuring the mouth of the Gauja River (in a pattern similar to the Latvian letter Ā) on a silver field and the Lobelia dortmanna (a flower common in the lakes of Ummis and Mazuika but otherwise endangered in Latvia) in silver and gold.

The previous coat of arms of Ādaži Municipality was approved on 28 March 2012, by the decision of the Ministry of Culture of the Republic of Latvia No.3.1.-4/13.

The white color of the water rose located in the center symbolizes clarity, wisdom, courage and support.