The memorial included a rally and car cruise, which featured some of the vehicles Walker drove in the "Fast and Furious" franchise, the Los Angeles Times reported.
Fans lined up hundreds of bouquets of flowers at the spot where the red Porsche Rodas crashed into a tree and lamp post before bursting into flames Nov. 30.
Los Angeles County sheriffs officials said they were on hand to monitor the increase in traffic and pedestrians in the area.
"Sheriff's deputies understand many people are choosing to visit the site to assist in the grieving process. Yet it is important to take legal safety measures to help avoid injury to people in the area," the department said in a statement.
The nearby North Park Community Church opened up its parking and lot and restrooms for mourners and offered police a staging and rest area inside.
"It's not something we were looking for but it kind of fell in our laps," said the church's pastor, Bob Hudson. "It's going to be cool and fun and yes, something's going to go wrong and we're going to have to fix it, but I enjoy opportunities like this.
"One reason we're doing this is because this is an opportunity to show God's love within our community," he added.