This paper presents results from a retrospective survey carried out in a rural setting in Senegal (on 804 20-to-69-year-old men and 1,039 15-to-54-year-old women), and aims at improving the understanding of contraceptive knowledge and practice. Contraceptive knowledge was measured through spontaneous and recognized contraceptive methods; contraceptive practice was measured through the past and present use of contraception. The gap between spontaneously-cited methods and recognized methods is important. While about 80% of men and 70% of women had ever heard about any contraceptive method, only 46% of men and 23% of women could spontaneously mention a specific contraceptive method (respectively 33% and 17% mentioned a modern method). Analyses have shown that individual characteristics such as age, education, migration are all determinants of contraceptive knowledge. Married men and women are more likely to know about methods such as the pill, intra-uterine device (IUD) and injections, as a result of family planning campaigns, which have focused on these methods and targeted married women. Nevertheless, contraceptive practice is still low. Only 16% of men and 4% of women have ever used any method. Contraceptive prevalence (current use) of women is only 1.9% for all methods and 1.5% for modern methods. The more widespread use of condoms by young men (about 30% of single men have ever used a condom, against only 7% of ever married men) reflects its recent diffusion associated with a decrease in male age at first intercourse. The low contraceptive use by women reveals their lack of accessibility to contraception. Young generations are not able to find an adequate answer to their needs in the villages, where family planning still targets marital contraception. Recommendations are formulated in order to integrate adolescents more fully in policy programs.