Public transportation demand has undergone a significant transformation in the aftermath of the COVID-19 pandemic, influenced by factors such as remote work trends, safety concerns, and hybrid lifestyles. Recognizing the economic and environmental implications, this study focuses on evaluating a city’s public transportation supply–demand equilibrium. In this investigation, the concept of connectivity performance serves as an index for calculating supply from Traffic Analysis Zones (TAZs) to transit networks. Parameters including frequency, speed, daily working hours, fleet volume, and distance to the next station are incorporated in this assessment. Additionally, the Share of Transit Trips Among the Total Trips (STTATT) is utilized to gauge the public’s inclination toward using public transit. To validate the efficacy of the proposed method, the city of Tehran, Iran, with ten Bus Rapid Transit (BRT) lines and seven metro lines, is selected as a case study. The findings reveal that public transportation services in the northern TAZs of Tehran exhibit lower efficiency and are potentially over-serviced. Furthermore, the study recommends the introduction of diagonal and radial lines connecting the western and southern parts of the city with the northern regions to enhance equity in Tehran’s transit system.