It lies in the Székely Land, an ethno-cultural region in eastern Transylvania, and is composed of two villages, Cozmeni and Lăzărești (Lázárfalva).

It neighbors the following communes: to the east Plăieșii de Jos, to the west Tușnad, to the north Sânmartin, and to the south Malnaș and Turia.

The villages belonged to the Csíkszék district until the administrative reform of Transylvania in 1876, when they fell within Udvarhely County in the Kingdom of Hungary.

By the terms of the Treaty of Trianon of 1920, it became part of the Kingdom of Romania, and the villages fell within Ciuc County during the interwar period.

After Soviet occupation, the Romanian administration returned in March 1945, and the commune became again officially part of Romania in 1947.