The necessity of epidemiological data visualization was determined through mapping of HIV / AIDS services, including location of ART sites. It demonstrated an impact on management decisions in decentralization of services and the need for adjustment measures by opening of new ART sites in Zaporizhia region. There are created 2 maps, mapping objects of which become sites of ART. By analyzing them it was proved inexpediency of opening four sites of ART in K-Dnipro, Zaporozhye, Primorsky and Volnyansk regions as the prevalence of HIV infection in these areas and in the surrounding areas are lower than in other regions. It was decided to expand the service areas of ART sites in the cities of Berdyansk, Energodar, Melitopol, Tokmak and Zaporozhye. According to the research it is planned opening of 4 new sites of ART – on the basis of the central district hospital in Kuibyshev and Berdyansk districts, the second in the cities of Berdyansk and Melitopol based TB dispensaries. Keywords: HIV services accessibility, epidemiological data visualization, ART sites.