Regional governments commonly use e-government technologies when setting out to deliver value to the public. While the use of technology has become a standard of modern public management, risks and limitations associated with its use, such as lack of trust from constituents, need to be carefully examined in light of city experiences, an endeavor that is still scarcely undertaken in the context of smart city initiatives. This paper examines trust regarding online platform usage in St. Petersburg, Russia. The research questionnaire was based on a set of variables that characterize the experience of using information technologies in different areas and in terms of attitudes towards them. A survey of 800 St. Petersburg residents was conducted (the sampling error does not exceed 4%, the confidence level is 95%) and statistical methods (correlation analysis, multiple regression, principal component analysis) were applied. Findings suggest that online trust is multidimensional and influenced by factors related to positive perceptions of institutions, political efficacy of online initiatives, and satisfactory past experience. The implications of these findings and future directions are presented in the context of the e-government research agenda.