Ciudad Real was first defined as province in the 1822 territorial division, during the (brief) Trienio liberal,[1] with boundaries similar to the current ones.

[3] After the death of Ferdinand VII, following the 1833 territorial reorganization carried out by Javier de Burgos and under the aegis of the 1834 Royal Statute, the current provincial deputations were created.

[4] In the case of Ciudad Real, the provincial corporation was constituted on 5 November 1835, following a 21 September 1835 decree.

The partisan distribution of the plenary is determined as per the D'Hondt apportionment of the results of the sum of municipal elections in each one of the judicial districts (as of 2019: Ciudad Real, Daimiel, Manzanares, Alcázar de San Juan, Villanueva de los Infantes, Valdepeñas, and Puertollano).

[6] Vis-à-vis the 2019 local elections, the size of the plenary was reduced from 27 to 25 provincial deputies, in accordance with the decreasing population of the province, then below 500,000.