This scientific article reveals the theoretical aspects of the essence and construc-tion of the digital ecosystem of a single-profile municipal formation. The signifi-cant role of digitalization is shown to increase the efficiency of the functioning of a single-industry municipality, improve operational efficiency, develop innova-tion and attract investment, as well as improve interaction with the population. The analysis of modern approaches to the essential characteristic of the "digital ecosystem" allowed us to propose an author's interpretation of the term "digital ecosystem of a municipal formation", to present its structure through a complex of interacting variators. The forms of interaction of participants in the digital eco-environment of the municipality were systematized, and the principles that underlie the communications of the main participants were developed to ensure a comprehensive effect and opportunities for the development of the territory. It was concluded that the introduction of digital technologies can become an im-portant success factor for the development of a single-industry municipality and increase its competitiveness, which served as the basis for highlighting methods for evaluating the effectiveness of forms of interaction between the parties.