Population in Seine-et-Marne 13 indicators covering population for Seine-et-Marne. IndicatorLatest Year10-yr change Rank Assumptions for fertility rates by age, type of projection and NUTS 3 1.86 Number 2100 down 0.3% 31st Demographic balances and indicators by type of projection and NUTS 3 r 16,171 2100 up 2.0% 38th Live births (total) by NUTS 3 region 17,109 Number 2024 down 13.2% 229th Population density by NUTS 3 region 252.9 Persons per square kilometre 2024 up 7.3% 589th Population on 1 January by broad age group, sex and NUTS 3 region 1.49 million Number 2025 up 7.2% 306th Population change - Demographic balance and crude rates at regional le 4,067 2024 up 284.8% 470th Population on 1st January by age group, sex, type of projection and NU 1.52 million Person 2100 down 0.9% 37th Population structure indicators by type of projection and NUTS3 region 78 2100 up 0.3% 1040th Assumptions for total fertility rates, type of projection and NUTS 3 r 1.73 Number 2095 down 0.8% 33rd Projected life expectancy at birth, by sex, type of projection and NUT 89.2 Year 2095 up 1.1% 121st Demographic balances by type of projection and NUTS3 region 77,842 2095 up 1.0% 42nd Population on 1 January by age group, sex and NUTS 3 region 1.49 million Number 2025 up 7.2% 305th Live births by age group of the mothers and NUTS 3 region 17,109 Number 2024 down 13.2% 229th