Objective: The objective of this study is to describe the use postpartum contraception, particularly LAM, among urban women with a birth in the 24 months prior to their interview, including women who actively report LAM use and those who report Passive LAM practices (i.e., EBF or Full BF, no menses return, and <6 months postpartum, but no FP method). Methods: This study uses endline household survey data for 2,765 women with a birth in the past two years from the Measurement, Learning and Evaluation Project (MLE) for the Nigerian Reproductive Health Initiative (NURHI) which was collected in 2014. Women's knowledge and use of LAM, and possible factors associated, were explored. Descriptive analysis to describe study variables and F-tests were conducted to determine significant differences between groups. Results: Knowledge of all three LAM criteria was very low among this population. Passive LAM practices were evident among women reporting no use of a family planning method, and accurate use of LAM among those who did report LAM as their current method was low. Place of delivery and counseling on exclusive breastfeeding as a form of contraception was explored among these women. Prolonged LAM use beyond 6 months was also prevalent within this study population. Conclusions: Knowledge of LAM criteria and accurate use of LAM is low among urban postpartum women in Nigeria. The integration of MIYCN-FP programs can improve the health and nutrition of women.