Bachivillers is a former commune in the Oise department in northern France. On 1 January 2019, it was merged into the new commune Montchevreuil.

Historical population

Year Pop. ±% 1793 268 —     1800 288 +7.5% 1806 260 −9.7% 1821 305 +17.3% 1831 287 −5.9% 1836 294 +2.4% 1841 273 −7.1% 1846 270 −1.1% 1851 295 +9.3% 1856 296 +0.3% 1861 285 −3.7% 1866 280 −1.8% 1872 254 −9.3% 1876 241 −5.1% 1881 237 −1.7% 1886 244 +3.0% 1891 236 −3.3% 1896 242 +2.5%

Year Pop. ±% 1901 265 +9.5% 1906 254 −4.2% 1911 231 −9.1% 1921 223 −3.5% 1926 212 −4.9% 1931 196 −7.5% 1936 215 +9.7% 1946 168 −21.9% 1954 212 +26.2% 1962 163 −23.1% 1968 188 +15.3% 1975 176 −6.4% 1982 165 −6.2% 1990 256 +55.2% 1999 347 +35.5% 2006 402 +15.9% 2009 419 +4.2% 2012 451 +7.6%

• Communes of the Oise department