[6] The parish of Ramnes was established as a municipality on 1 January 1838 (see formannskapsdistrikt law).

The official blazon is "Argent, a raven passant wings elevated sable" (Norwegian: I sølv en svart ravn).

They are canting arms since the name of the municipality is derived from the word "raven".

Around the village of Ramnes, the valley widens out into a large, cultivated plain known as Ramnessletta.

Between the larger and smaller valley which generally run north-south are low, wooded hills.

The hills are sparely covered with grass and trees, exposing weathered soil.