Introduction: Child motherhood must be evidenced by the naturalization of this social fact itself, since it is the product of rape. The study of this phenomenon is relevant after the approval of some laws that seek to prevent it. Objective: to analyze of the fertility rate in girls between the ages 10 and 14 in Costa Rica (2000-2019) the age of the perpetrators or "parents" within the framework of ideological State apparatuses, social inequality, and a conservative social context. Method: The information was processed from the online databases of the Instituto Nacional de Estadística y Censos. The approach is quantitative, with a correlational and non-experimental study of the population of girls between 10 and 14 years of age throughout the country, as well as for small geographic areas. Results: Infant fertility has decreased between 2000 and 2019. The estimated age of pregnancy is at the age of 13. Geographical areas with higher fertility levels are detected, inside and outside the Metropolitan Area. It is statistically evidenced that these have contributed to the increase in undeclared perpetrators considerably after 2016. All this is validated by religious institutions and the media proclaim as positive, despite national and international jurisprudence. Conclusions: This information is essential to guide public educational and health promotion policies from the first level of care, which promote the reproductive rights of girls.