This paper identifies the effect of abortion depenalization in the three exceptional cases, the violation, the malformation and the physical or mental health of the mother, contemplated in the Sentence C-355/06 of the Constitutional Court, on the birth rate in Colombia. For this, I used a model of difference in differences, using a municipal panel data taking advantage of the geographical variation of clinics and hospitals in the country. It is found that the abortion depenalization influences the reduction of the birth rate between 5 and 6%. The effect fades with the absence of this type of institutions and has important variations at the regional level.