Purpose Adequate utilization of postnatal care (PNC) services is a major contributing factor to reducing maternal mortality among women. Hence, this study was designed to assess the level of utilization of PNC services and its predictors among postpartum women in Ekiti State, Nigeria. Design The study adopted a cross‐sectional descriptive design. Methods A total of 405 postpartum women from primary healthcare centers in five selected local government areas in Ekiti State participated in this study. A self‐structured questionnaire was used to collect data, which were analyzed using IBM SPSS Statistics version 20 (IBM Corp., Armonk, NY, USA). Data were presented using descriptive (means, frequencies, and percentages) and inferential (Pearson's chi square and binary logistic regression) statistics. Findings The mean age of the women was 27 ± 8 years. A preponderance of the respondents (98.8%) were aware of PNC services, of which only 22% utilized PNC services after their last delivery. Those who did not utilize PNC services identified some of the barriers to their utilization, which included poor attitude of the healthcare providers and insufficient financial resources. The rate of utilization was found to be significantly higher among those who were 25 to 34 years of age (p = .03), who had formal education (p = .04), who were employed (p = .01), who had made use of an antenatal care (ANC) clinic (p = .02), and who had a good level of knowledge about PNC (p = .02). Furthermore, a prior experience with PNC services reduced by almost 90% the odds of a mother's subsequent utilization after her last delivery (odds ratio 0.10; confidence interval 0.05–0.24). Conclusions The majority of respondents in this study were aware of PNC services, but this did not translate to utilization of the services. Also, the rate of utilization of PNC services was significantly associated with certain sociodemographic factors such as age, educational status, employment status, use of an ANC clinic, and level of knowledge about PNC. Clinical Relevance This study provides pertinent knowledge for healthcare providers, especially nurses, who provide PNC services.