The article regards the brief results of the analysis of the influence of port activity on the city’s economy which was conducted within the framework of the research “Elaboration and Justification of Target-Oriented Development Trends of the Big Port of St. Petersburg Ensuring Efficient Economic Development of the City of St. Petersburg” on request of the St. Petersburg Government Committee for Transport and Transit Policy. The article was published in the information transport magazine “Терминал”, No.4 (64), 2007.