In September 2023, the number of deaths was 8,651, lower than the number registered in August 2023 (917 less deaths; -9.6%) and in September 2022 (96 less deaths; -1.1%). In that month, the number of deaths due to COVID-19 increased to 242 (16 more deaths than in August 2023), accounting for 2.8% of all deaths. Compared to September 2022, there was an increase of 62 deaths due to COVID-19.

In August 2023, 7,220 children were born alive, corresponding to a decrease of 2.0% (149 less) compared to July 2023 and to a decrease of 6.4% compared to August 2022 (7,713). The total number of live births registered in the first eight months of 2023 (55,969) was higher than the value observed in the same period of 2022 (54,303), representing 1,666 more live births (+3.1%).

In August 2023, the natural balance was -2,311, worsening in relation to the previous month (-1,341) and the same month of 2022, when it reached -1,541. In the first eight months of 2023, the cumulative value of the natural balance was -22,786, corresponding to an improvement from the value registered in the same period of 2022 (-29,588).

In August 2023, 4,742 marriages were celebrated, more than the number registered in July 2023 (133 more; +2.9%), but less than the number of marriages held in august 2022 (217 less marriages; -4.4%). In the first eight months of 2023, 24,262 marriages were celebrated, 373 more (+1.6%) than in the same period of 2022.