Aims The present study aimed to evaluate the spatial distribution of health services, the extent of access of citizens and vulnerable groups to health services as a case study in the city of Urmia. Methodology The present descriptive-analytical research was conducted in 2020 in Urmia, Iran. The required data were obtained from the latest statistics related to the 2016 census and land use information collected by the Deputy of Urban Planning and Architecture of Urmia Municipality in 2020. Inequalities in access to health care for citizens and vulnerable groups were analyzed using the MABAK technique. ArcGIS 10. 3 software was used. Findings About 34% of the population of Urmia was not covered by medical services and also about one year of the population was not covered by medical services. In general, among the affected groups, the elderly, immigrants and the unemployed have the best access to medical services, respectively, and also children, illiterates, and women are in a worse situation than other groups. Also, the central areas of Urmia were at the “, privileged”,level in terms of access to health services for all residents and vulnerable groups, and the level of access to health services for residents of suburban areas, who often live in Zone 2, was better than residents of the most affluent areas who often live in Zone 1. Conclusion Medical services should be located in Urmia in such a way that all citizens, especially vulnerable groups, can easily use them. As a result, in order to increase the access of citizens and vulnerable groups to health services, it seems necessary to pay attention to the proper distribution of these services throughout the city and also in relation to the distribution of population and its density.