Saare County , or Saaremaa, ( or Oesel; ) is one of 15 counties of Estonia. It consists of Saaremaa, the largest island of Estonia, and several smaller islands near it, most notably Muhu, Ruhnu, Abruka and Vilsandi. The county borders Lääne County to the east and Hiiu County to the north. In January 2013 Saare County had a population of 30,966 – constituting 2.4% of the population of Estonia.