This disclosure relates to systems and methods for managing vehicle occupancy and/or selecting and delivering content to vehicle occupants. Sensor information that may be used to estimate an occupancy of one or more vehicles, such as vehicle weight information, may be collected by a service and used to estimate a relative passenger occupancy of a vehicle and/or a number of occupants in the vehicle. Indications of estimated vehicle occupancy may be provided to prospective passengers via one or more visual displays associated with a transit station and/or mobile and/or personal electronic devices associated with the prospective passengers. Vehicle occupancy information may further be used in connection with managing advertisements displayed to occupants of a vehicle.