Rapla County is one of the fifteen counties of Estonia. It is situated in the western part of the country and borders Järva County to the east, Pärnu County to the south, Lääne County to the west, and Harju County to the north. In 2022 Rapla County had a population of 33,529 – constituting 2.5% of the total population of Estonia.

Järva County is one of 15 counties of Estonia. It is situated in the central part of the country and borders Lääne-Viru County to the east, Jõgeva County to the south-east, Viljandi County to the south, Pärnu County to the south-west, Rapla County to the west, and Harju County to the north. In January 2009, Järva County had a population of 29,940 – constituting 2.7% of the total population in Estonia.