The accessibility of health care organizations plays a key role in promoting health equality and quality of life. The main objective of this paper is to analyze the accessibility of health care organizations in the city of Zadar. Data on the locations of general practitioners’ clinics, dental care clinics, pediatric clinics, pharmacies, private practice offices and general hospitals were used in the GIS analysis. The addresses of health care organizations were taken from the website of the Croatian Health Insurance Fund (HZZO) and then geocoded. Data on the transport network of the settlement of Zadar were taken from the Geofabrika website. Topological verification and data correction were performed. Healthcare accessibility zones were derived in the ArcMap 10.1 Network Analyst extension. Accessibility zones were derived according to the travel time criterion and classified with respect to minutes on foot (5-10-15). Data on statistical circles and population were taken from the Central Bureau of Statistics. It has been found that there are significant differences in statistical circles regarding the accessibility of health care organizations in the city of Zadar. The highest concentration of health care organizations has been marked in the statistical circles of Poluotok, while the scarcity of institutions was noted in the statistical circles of the eastern part of the city.