Yarriambiack Shire Council was formed on 19 January 1995 by the amalgamation of the former Shires of Karkarooc and Warracknabeal, most of the Shire of Dunmunkle and part of the Shire of Wimmera. It has an area of 7158 square kilometres and has a projected population of 7,315 for 2013. The Shire stretches from the Wimmera River just north of the Grampians in the south, to the centre of the Mallee in the north. The Yarriambiack Creek is the main natural feature traversing the Shire. The area is also linked by road and rail systems that run in a north-south direction. The area has an almost ideal climate with a short winter and delightful autumn and spring. Summer temperatures can be hot, particularly in the north.