The epicenter of the 2:13 a.m. quake was located nearly 15.5 miles south of Port Hueneme, the USGS said. Its depth was measured at 6.2 miles.
There were no immediate reports of injuries or major damage.
Tarzana resident Lynn Perez reported being woken up by the temblor.
People from West Hollywood, South Gate, and Marina del Rey said it felt like one quick jolt.