According to the 2002 census, Tusnád Commune is inhabited by 2114 people, and is made up of three villages: Tusnád (Nagytusnád), Újtusnád and Verebes. The first written document in which Tusnád is mentioned dates back to 1421. The church was built on the place of an old chapel in 1802. Its pulpit and main altar were donated by Miklós Kovács, Bishop of Transylvania, who derived from this village. Tusnád is also mentioned in one of the first documents on potato-cultivation in Csík, issued in 1800. On 11 September 1822 most of the village was destroyed in a fire. It was then when 43 families moved west to the Olt River, and settled along River Mitács, founding a new village called Újtusnád [New Tusnád]. Lots of stone gates, stone houses and stone crosses can be found in these villages. The commune is particularly rich in mineral springs, as well.

In 2005, as part of the 'Living Heritage' project run by the Csík Association for Tourism and Nature Conservation together with the Environmental Partnership Foundation, Romania's first mineral water museum was opened in the centre of the commune. The museum was built close to the Bagolyforrás [Owl Spring in English], a mineral spring with a remarkably abundant flow. Travellers often fill their bottles with its water.