Introduction: Postnatal care is a care provided to women and their babies within 42 days after delivery. More than half a million women die every year worldwide from complications in pregnancy and childbirth; most of these deaths are happening during the postnatal period. Post natal care services (PNC) utilization would avert the death of mothers and their new born;  Therefore, this study were designed  to assess the magnitude  and associated factors of postnatal care services utilization in the study area.

Objective: The main objective of the study was to assess the magnitude of postnatal care services utilization and associated factors among women in Debre Markos town, 2017.

Methods:  Community based cross-sectional study was conducted from March 1 to 30/ 2017 in all the seven kebelles of Debre Markos town. A total of 997 Women who gave birth and had surviving children less than 1year were included in the study. Data were collected using interviewer administered and a pre–tested questionnaire. Data was entered, cleaned and coded into EPI-DATA version 3.1 and exported to Statical Packag for social since (SPSS) version 20 for analysis. Frequency distributions and descriptive analysis was done. Bivariate and multivariate logistic regression was done to identify factors that were associated with Post natal care utilization. Odds ratio at 95% confidence interval was used to determine the association and the statistical significance was declared at p-value of 0.05.

Result: The magnitude of Post natal care utilization was 29%. Results of this study revealed that majority of mothers, 261 (68.15%)   attended antenatal care service during their recent pregnancy and 378 (98.694%) delivered at health facility. History of ANC follow up(AOR=  2.223,  95%CI=1.297,3.811 )  and history of abortion  (AOR=2.505,95%CI=1.179,5.320) were the  determinant  factors  for PNC services utilization .

Conclusion: This study revealed that more than half of the respondents were not utilized PNCs. History of Antenatal care (ANC) follow up and history of abortion were the determinant factors for PNC services utilization.

Recommendation: Community level awareness creation program needs to be implemented by the zonal health bureau woreda health office, local health professionals and other partners.