Grekaj (Girqani) is attested in the Ottoman defter of 1536-1539 as a village in the ziamet of Reka. The village recorded 11 households. In 1583, the village counted 20 families. It paid the timar or spahi 1070 akçe per year and had 2 mills that worked all year round. The anthroponyms recorded were overwhelmingly Albanian in character, with instances of Slavicisation: (e.g Lazar Gjin, Petri Bogdan, Jovan Gjin, Keko Gjin, Keko Todor, Gjin Petko, Dede Bodin, Zaharia Gjin etc).[1]
In statistics gathered by Vasil Kanchov in 1900, the village of Grekaj was inhabited by 25 Christian Albanians and 14 Muslim Albanians.[2]
As of the 2021 census, Grekaj had 3 residents with the following ethnic composition:[3]
According to the 2002 census, the village had a total of 20 inhabitants.[4] Ethnic groups in the village include:[4]