In 2017 there were 86,154 live births of mothers residing in Portugal, which represents a decrease of 1.1% (less 972 children), compared to the previous year. Of total live births, 54.9% were born "outside marriage".
There were 109,586 deaths of residents in national territory, a decrease of 0.9% (less 987 deaths) compared to 2016. Of total deaths, 54,987 were of men and 54,599 were of women; 85.0 % of deaths were of persons aged 65 and over.
There were 226 deaths of children under 1 year of age (less 56 than those registered in 2016), being the lowest value ever registered.
In 2017 Portugal maintained, for the ninth consecutive year, a negative natural growth (-23,432).
33 634 marriages were celebrated, which represent an increase of 3.8% compared to the previous year (more 1,235 marriages). 65.8% of marriages were civil ceremonies and 33.7% were Catholic. In more than half of total marriages (58.1%) the future spouses already cohabitated before the marriage.