Bilia (French pronunciation: [bilja]) is a commune in the Corse-du-Sud department of France, on the island of Corsica, within its Corsican single territorial collectivity. It is part of the microregion of Bisogène, the south-western part of the Corsican region of Rocca.

Jean François Quilichini was mayor of Bilia from 1989 to March 2008, whereupon he was replaced by Michel Tramoni. Both mayors are affiliated to the French Communist Party.

In 2017, Bilia was home to 46 inhabitants.

Historical population

Year Pop. ±% 1806 153 —     1821 215 +40.5% 1831 208 −3.3% 1836 260 +25.0% 1841 265 +1.9% 1846 234 −11.7% 1851 265 +13.2% 1856 330 +24.5% 1861 361 +9.4% 1866 295 −18.3% 1872 257 −12.9% 1876 242 −5.8% 1881 240 −0.8% 1886 227 −5.4% 1891 228 +0.4% 1896 230 +0.9% 1901 252 +9.6%	Year Pop. ±% 1906 248 −1.6% 1911 245 −1.2% 1921 255 +4.1% 1926 321 +25.9% 1931 384 +19.6% 1936 352 −8.3% 1946 173 −50.9% 1954 72 −58.4% 1962 45 −37.5% 1968 58 +28.9% 1975 40 −31.0% 1982 38 −5.0% 1990 41 +7.9% 1999 40 −2.4% 2007 49 +22.5% 2012 48 −2.0% 2017 46 −4.2%
Source: EHESS and INSEE

• Communes of the Corse-du-Sud department