The majority of the population lives in the villages of Berkåk, Innset, Stamnan, Ulsberg, Voll, and Nerskogen.

The first element is, maybe, the plural genitive case of renna which means "journey", "march", or "road".

The official blazon is "Or, a pall reversed couped gules" (Norwegian: I gull ein svevande omvend raud gaffelkross).

The arms were designed by Bjørn Casper Horgen after an idea by Magne Jostein Hoel.

Rennebu Municipality mainly consists of uncultivated areas of mountains, lakes, moors, and forests.

The northeasternmost part of the Trollheimen mountain range also lies within Rennebu Municipality.

The Forollhogna National Park lies in the extreme southeastern part of the municipality.

Situated at some altitude inland in mid-Norway, Rennebu Municipality has a boreal climate.

The municipal council (Kommunestyre) of Rennebu is made up of 21 representatives that are elected to four year terms.