Kenya was one of the first sub-Saharan countries to enter the fertility transition, and analysts have suggested various explanations for this. This paper examines the growth in contraceptive availability in Kenya by looking at the Kenya family planning programme and its association with the fertility transition. This is of critical programmatic importance because the fertility transition is not yet underway in many sub-Saharan countries. Policymakers will find the information from this study helpful in evaluating the efficacy of current programmes and replicating the Kenyan programme in areas where fertility decline has not yet occurred. For researchers, the study attempts to highlight some of the major factors driving Kenya’s fertility decline, apart from the conventional arguments about social and economic development.