In 2015, the coat of arms was modified to bring the drawing of the lamprey closer to its real-life appearance.

[4] The total area of the county is 80.2 square kilometers, which is the third smallest county in Latvia after the Saulkrasti and Stopiņi Municipalities, moreover, most of it is covered by forests, but a quarter of the total area is used for agriculture.

Carnikava is known for its Piejūra ('Seaside') Nature Park, which is part of the European Union's Natura 2000 network of specially protected areas and which contains a number of protected plant species.

The region has a 19-kilometer-long beach along the Vidzeme coast of the Gulf of Riga from Kalngale to Lilaste.

Rivers: Gauja, Langa, Eimuri Canal, Dzirnupe, Vecgauja.