Purpose: The objective of the study was to establish the level of utilization of obstetric care services; to establish factors promoting utilization of obstetric care services, and to identify factors hindering utilization of essential obstetric care services among Bajun women in the Faza Division.Methodology: The study was cross-sectional. Purposive and systematic sampling was used in getting participants. The research instruments to be used were self-administered semi-structured questionnaires and Focused Group Discussions (FGDs). Chi-square values were used to test the significance of the association between the dependent and independent variables. Qualitative data from FGDs were transcribed and analyzed by the thematic content analysis technique.Results: More than half of the respondents (95.6% (175)) indicated that obstetric services are important essential services while 4.4% (8) of them indicated that obstetric services are not important essential services. More than half of the respondents, (74.4% (131)) indicated that they have ever been provided with these services while 25.6% (45) of them indicated that they have never been provided with these services. The findings also indicate that there was an insignificant association (x2 = 2.135a, p = 0.711) between age of the respondents, the level of education (x2 = 0.258, p = 0.612) and (X2 = 1.144a, P = 0.887) between religion of the respondents and the utilization of essential obstetric care services. There is thus, a high probability of utilization of essential obstetric care services (1.049, 2.045, 1.219 and 1.051 times respectively) for those women who have received the information about obstetric services from mass media, the health care, parents and their teachers respectively compared to those who received information from their peers. For the women who were pregnant, the findings indicate a low probability of the utilization of essential obstetric care services for the women who sought pregnancy help from their doctors and nurses/wives (0.357 and 0.102 times respectively). There is also a high probability of utilization of essential obstetric care services for those women who have ever been pregnant, those who have ever had complications during pregnancy, labour & delivery, those who seek help during their pregnancy complications and those who seek help from the hospital during their pregnancy complications.Unique contributions to theory, policy and practice: Therefore, the study recommends the intensification of knowledge to the women in Faza Division, Lamu County about the importance of utilization of essential obstetric services. This will help to reduce the cases of complications affecting mothers during pregnancy, labour and delivery and thus reduce the infant as well as the maternal mortality rate in the County.