BackgroundDue to additional roles and emotional changes that occur during postpartum period, women use contraceptives differs from other times in their life. However, there is limited information about the unmet need for family planning (FP) among women in the extended postpartum period in the study area. Therefore, this study aimed to assess magnitude of unmet need for family planning and associated factors among women in the extended postpartum period in Dabat district, Northwest Ethiopia.MethodsA secondary data analysis was performed using the Dabat Demographic and Health Survey 2021. A total sample of 634 women during the extended postpartum period was included in this study. Stata version 14 statistical software was used for data analysis. Descriptive statistics were described using frequencies, percentages, mean, and standard deviation. Multicollinearity was tested using the variance inflation factor (VIF) and we computed Hosmer and Lemeshow goodness of fit. Both bivariable and multivariable logistic regression analyses were carried out to determine the association between independent variables and outcome variable. Statistical significance was declared at a p-value ≤ 0.05 with a corresponding 95% confidence interval.ResultsThe overall unmet need for FP during the extended postpartum women was 42.43% (95% CI: 38.62, 46.33), of which 33.44% was unmet need for spacing. Place of residence (AOR = 2.63, 95%CI: 1.61, 4.33), place of delivery (AOR = 2.09, 95%CI: 1.35, 3.24), and availability of radio and or TV (AOR = 1.58, 95% CI: 1.22, 2.13) were significantly associated with unmet need for family planning.ConclusionThe magnitude of unmet need for family planning among women during the extended postpartum period in the study area was high when compared to the national average and the United Nations sphere standard of unmet need for family planning. Place of residence, place of delivery, and availability of radio and or TV were significantly associated with unmet need for family planning. Hence, the concerned bodies are recommended to promote intuitional delivery and give spatial attention to those who are residing in rural areas and to those who have had no media exposure in order to reduce the unmet need for family planning among postpartum women.