In recent years, various forms of interaction between the state and business have been developing. Business interest in state industrial parks is associated with the possibility of quick launching of production, optimizing logistics costs, meeting domestic demand for domestic prod-ucts and expanding existing facilities. In order to attract residents to parks, the state provides tax and legal preferences, preferential lending and support to investors and residents. Creating new jobs and attracting investment in production contributes to the economic growth of the region, improving the quality of life of the population through rising incomes and improving infrastruc-ture. All these factors associated with the development of state industrial parks in the region have a significant impact on its sustainable development. The analysis of sustainable development of the region aims to maintain equality in the social, economic and environmental spheres. However, existing approaches to assessing the sustainability of a region do not include the presence of in-dustrial parks on its territory and the volume of investment in their development. The article pro-poses a methodological approach to assessing the sustainable development of a region, taking in-to account the peculiarities of the functioning of state industrial parks in it. As a result of the study, an index of sustainable development of the regions of the Northwestern Federal District was calculated and its relationship with the volume of investments in state industrial parks was assessed. The proposed methodological approach makes it possible to improve the quality of decisions made on the development of state industrial parks in the regions. The obtained research results are necessary for management companies for the purpose of making management decisions and for residents when choosing a site for placement.