The Bay Area posted sturdy job gains during April, led primarily by an upswing in the East Bay and San Francisco region -- but the South Bay suffered a setback in its employment boom, officials reported Friday.

Employers in the Bay Area added a net gain of 2,600 jobs in April, the state's Employment Development Department said.

The East Bay added 1,300 jobs, the South Bay lost 1,800 jobs and the San Francisco-San Mateo-Marin region gained 2,600 jobs, according to the EDD report. All the numbers were adjusted for seasonal gains.

California added 10,400 jobs in April, the EDD reported. The statewide jobless rate improved to 9 percent, down from the 9.4 percent rate in April.

The nine-county region has recovered nearly all of the jobs it lost since employment in the area hit its pre-recession plateau in February 2008. The number of jobs in the Bay Area is now at its highest level since September 2008.

Contact George Avalos at 408-373-3556 or 925-977-8477. Follow him at twitter.com/george_avalos.