Abstract Background: A majority of women suffer from low back pain and pelvic pain in the time of their pregnancy and it persists to postpartum time. This condition impacts negatively on many of the daily activities of women, especially weight bearing activities such as walking and standing. And it’s not addressed issue by researchers. To date there is no published research on prevalence and associated risk factors of postpartum low back pain in our setup Objectives: The aim of this study is to determines the prevalence and associated factors of postpartum self reported low back pain among women attending postnatal care in Kemissie town governmental health institution Method: Institution based cross sectional study was conducted among 412 postnatal women. Data was collected by interview using pretested structured questionnaire. Data were entered and analyzed using Epi Info version 7 and SPSS version 23 respectively. Bivariable and Multivariable binary logistic regression were used to see the association between independent and the outcome variable with 95% CI and P value<0.05 Result: of 412 postpartum women 127 back pain during recent pregnancy Conclusion and recommendation: Nearly one third of postpartum women attending in hospital and health center experiences low back pain. History of low back pain and low back pain during recent pregnancy was factor significantly associated with low back pain after delivery. Federal minster of health and regional health bureau should include low back pain assessment in the component of antenatal care and postnatal care. Key words:-prevalence, postpartum low back pain, associated factors, cross sectional