In October 2023, the number of deaths was 9,230, higher than the number registered in September 2023 (417 more deaths; +4.5%), but lower than that registered in October 2022 (300 less deaths; -3.1%). In that month, the number of deaths due to COVID-19 decreased to 171 (71 less deaths than in September 2023), accounting for 1.9% of all deaths. Compared to October 2022, there was a decrease of 54 deaths due to COVID-19.

In September 2023, 7,549 children were born alive, corresponding to an increase of 3.6% (264 more) compared to August 2023 and to a decrease of 3.1% compared to September 2022 (7,787). The total number of live births registered in the first nine months of 2023 (63,633) was higher than the value observed in the same period of 2022 (62,090), representing 1,543 more live births (+2.5%).

In September 2023, the natural balance was -1,233, improving in relation to the previous month (-2,256), but worsening compared to the same month of 2022, when it reached -948. In the first nine months of 2023, the cumulative value of the natural balance was -23,933, corresponding to an improvement from the value registered in the same period of 2022 (-30,536).

In September 2023, 5,352 marriages were celebrated, higher than the number registered in August 2023 (581 more; +12,2%) and higher than the number of marriages held in September 2022 (187 more marriages; +3.6%). In the first nine months of 2023, 29,657 marriages were celebrated, 603 more (+2.1%) than in the same period of 2022.