Georgia was the daughter of Conservative Party president John Walsh.
Police say she was crossing the street at the intersection of McRae Drive and Millwood Road at around 4 p.m. on Wednesday afternoon, when a minivan slammed into her.
No charges have yet been laid against the 50-year-old driver, but officers say the incident is still under investigation.
Some residents in the area have called on the city to install more signs or speed bumps to try to prevent a similar tragedy.
In lieu of flowers, the Walsh family is asking people to make donations to the SickKids Foundation.