Yzosse (French pronunciation: [izɔs]; Occitan: Isòssa) is a commune in the Landes department in Nouvelle-Aquitaine in southwestern France.

Historical population

Year Pop. ±% p.a. 1793 159 —     1800 169 +0.88% 1806 159 −1.01% 1821 203 +1.64% 1831 228 +1.17% 1836 233 +0.43% 1841 238 +0.43% 1846 277 +3.08% 1851 290 +0.92% 1856 282 −0.56% 1861 271 −0.79% 1866 291 +1.43% 1872 286 −0.29% 1876 276 −0.89% 1881 311 +2.42% 1886 293 −1.19% 1891 302 +0.61% 1896 285 −1.15%	Year Pop. ±% p.a. 1901 297 +0.83% 1906 298 +0.07% 1911 281 −1.17% 1921 247 −1.28% 1926 253 +0.48% 1931 244 −0.72% 1936 247 +0.24% 1946 242 −0.20% 1954 250 +0.41% 1962 301 +2.35% 1968 298 −0.17% 1975 291 −0.34% 1982 333 +1.94% 1990 312 −0.81% 1999 430 +3.63% 2009 425 −0.12% 2014 374 −2.52% 2020 377 +0.13%
Source: EHESS (1793–1999) and INSEE

• Communes of the Landes department