Population in Viterbo 13 indicators covering population for Viterbo. IndicatorLatest Year10-yr change Rank Assumptions for fertility rates by age, type of projection and NUTS 3 1.57 Number 2100 up 3.4% 1143rd Demographic balances and indicators by type of projection and NUTS 3 r 3,229 2100 down 3.0% 483rd Live births (total) by NUTS 3 region 1,539 Number 2024 down 38.1% 1362nd Population density by NUTS 3 region 88.4 Persons per square kilometre 2024 down 5.3% 1212th Population on 1 January by broad age group, sex and NUTS 3 region 307,405 Number 2025 down 3.1% 1079th Population change - Demographic balance and crude rates at regional le 2,147 2024 up 242.4% 695th Population on 1st January by age group, sex, type of projection and NU 196,845 Person 2100 down 5.0% 598th Population structure indicators by type of projection and NUTS3 region 94 2100 down 2.8% 180th Assumptions for total fertility rates, type of projection and NUTS 3 r 1.37 Number 2095 up 3.8% 1131st Projected life expectancy at birth, by sex, type of projection and NUT 88.7 Year 2095 up 1.3% 365th Demographic balances by type of projection and NUTS3 region 15,430 2095 down 3.5% 508th Population on 1 January by age group, sex and NUTS 3 region 307,405 Number 2025 down 3.1% 1078th Live births by age group of the mothers and NUTS 3 region 1,539 Number 2024 down 38.1% 1362nd