This study conducts an empirical analysis to identify the drivers of the rebound in the number of births in 2024, focusing on key factors such as the base effect following the COVID-19 period, the recent increase in marriage rates, the entry of the echo-boom generation into prime family formation ages alongside rising fertility among women in their 30s, and changes in attitudes toward marriage and fertility. Using objective data, including official birth statistics and a survey of women who gave birth in 2024, the study presents both structural and short-term factors underlying the rebound, examines the potential persistence of the recent rebound, and derives policy implications relevant to future birth trends.