There is an increasing actualisation of the knowledge component of the institutional capacity of local self-government authorities in Ukraine within ongoing decentralisation. The issue that arises concerns the officials' knowledge sufficiency to generate and implement new ideas on the territories' development, and the availability of unique skills for the development of relevant programmes, projects and plans. Herein, the analysis of the real knowledge needs of officials, whose sphere of competence lies in decision-making about the territories' ways of development as well as their practical implementation, plays an important role. The article presents the results of a study of the opinions of local self-government officials of united territorial communities (UTCs) from the Dnipropetrovsk, Sumy, Zhytomyr, Kherson and Poltava regions of Ukraine, concerning their level of knowledge on the territories' management; their needs for additional knowledge; the most common and convenient ways of obtaining knowledge; and the most problematic areas where the new knowledge is most demanded. The obtained data and the conclusions drawn can be considered, in particular, as an informational basis for the formation of training programmes and plans, cases and tasks for specialists training in the field of public administration.