Csíkszék

Csíkszék was one of the Székely seats in the historical Székely Land.

It administered two sub-seats (Hungarian: fiúszék, Latin: sedes filialis), namely Gyergyószék and Kászonszék. It was divided on the natural borders of the region, as the main territory of Csíkszék lay in the valley of the Olt River, Gyergyószék lay in the valley of the river Maros (Mureș), while Kászonszék lay in the valley of the river Kászon (Cașin).

Population
The religious composition of Csíkszék's population in 1867 was as follows:


 * Roman Catholic: 96,525
 * Greek Catholic: 13,028
 * Eastern Orthodox: 17
 * Others: 1.667
 * Total: 111,237