Karksi-Nuia is situated in the southern part of Viljandi County. It has an area of 3 km² and about 2100 inhabitants. It is part of the Karksi Parish, a municipality that consists of the town and the 20 villages around it. Karksi-Nuia is about 34 km from Viljandi, 82 km from Pärnu, 99 km from Tartu and 193 km from Tallinn
