According to Benin's 2013 census, the total population of Mono Department was 497,243, with 241,554 males and 255,689 females. The proportion of women was 51.40%. The total rural population was 50.30%, while the urban population was 49.70%. The proportion of women of childbearing age (15 to 49 years old) was 23.70%. The foreign population in the department was 8,975, representing 1.80% of the total population. The labour force participation rate among foreigners aged 15–64 years was 39.70%. The proportion of women among the foreign population constituted 57.00%. The number of households in the department was 105,986 and the average household size was 4.7. The intercensal growth rate of population was 2.90%.