The community of Rancheria was evacuated Saturday evening. Residents of the nearby communities of Yosemite West, Old El Portal, Incline and Jerseydale have also been told they may have to leave their homes.
The blaze started Thursday when a motorhome caught fire. The fire has burned more than 4,600 acres along Highway 140. A 15-mile stretch of that highway leading into the park has been shut down.
Park officials are suggesting tourists traveling to Yosemite take Highway 120 or Highway 41 instead.
More than 800 firefighters are battling the wildfire, but officials don't expect the blaze to be contained for another week.
The Associated Press contributed to this report.