Gheorgheni is a city in Harghita County, Romania, with a population of 15,844, as of 2021. It lies in the Székely Land, an ethno-cultural regio…Gheorgheni is a city in Harghita County, Romania, with a population of 15,844, as of 2021. It lies in the Székely Land, an ethno-cultural region in eastern Transylvania. The city administers four villages: Covacipeter, Lacu Roșu, Vargatac, and Visafolio.