It happened on West Mount Houston near Ella Blvd. around 2am Saturday. The roadway was shut down for hours as deputies investigated.
The victim was later identified as Diana DeLeon.
According to Harris County Sheriff's Office deputies, DeLeon was walking east in the inside lane of the 2100 block of West Mount Houston when she was struck by a vehicle.
Officials said the striking vehicle was a small black sedan. It left the scene, traveling east on West Mount Houston
DeLeon died at the scene. The driver of the car remains at large.
Deputies believe the car should have noticeable damage from the impact with the victim. Anyone with information is urged to call Crime Stoppers at 713-222-TIPS or the HCSO Traffic Enforcement Section at 713-674-5393 or 713-221-6000.