 According to demographic data from INSEE, the population peak came in 1876 with 1,881 inhabitants.It marked the maximum population of the commune in the 19th century that was not be exceeded until 1968, nearly a century later.At the beginning of the 20th century until after the Second World War, Aigrefeuille d'Aunis went into a long period of decline, resulting in the stagnation of economic activities and an almost continuous decline in population.