Bayır is a neighbourhood of the municipality and district of Menteşe, Muğla Province, Turkey. Its population is 5,403. Before the 2013 reorganisa…Bayır is a neighbourhood of the municipality and district of Menteşe, Muğla Province, Turkey. Its population is 5,403. Before the 2013 reorganisation, it was a town. Bayır is situated on Turkish state highway D.550 which connects Muğla to İzmir. The distance to Muğla is 15 kilometres.