Majority of Silicon Valley employees not US-born?

Washington: Silicon Valley has a significantly higher number of foreign-born employees with nearly three fourth of the workers in the field of computer and mathematics non-US citizens, a new report has said.

Thirty-seven percent of tech hub's population are non-US citizens who entered the country to fill a specific job in the tech industry, compare that to California's 27 percent of the population that is from another country and a 13 percent national average, according to the annual report of the Joint Venture Silicon Valley.

This population share increases to 50 percent for the employed, core working age population (ages 25-44), and even higher for certain occupational groups.

Nearly three-quarter or 74 percent of Silicon Valley-employed computer and mathematical workers ages 25 to 44 in 2014 were foreign-born, the report said.

According to the report, sustained growth of the Silicon Valley economy is swelling to new levels that have Bay Area housing, transit and highways bursting at the seams and hard pressed to accommodate the wave of prosperity.

"It's extraordinary, really, and a thing to celebrate," said Russell Hancock, CEO of Joint Venture.

"This growth just keeps accelerating. We are now adding jobs at a rate we haven't seen in 15 years, and that's powering everything else. But with growth comes challenges and now we have to mobilise like never before," he said.