Amazon is planning to build another headquarters outside Seattle

Amazon announced on Thursday that it is planning to open another headquarters called Amazon HQ2 in a currently unknown US city.

Amazon HQ2 will cost $US5 billion (£3.8 billion) and eventually house up to 50,000 Amazon staff, Amazon said in a press release.

The ecommerce giant currently has its main HQ spread across 33 buildings in Seattle but its aggressive expansion means it is quickly running out of space in the city.

“We expect HQ2 to be a full equal to our Seattle headquarters, said Jeff Bezos, Amazon founder and CEO, in a statement.

“Amazon HQ2 will bring billions of dollars in up-front and ongoing investments, and tens of thousands of high-paying jobs. We’re excited to find a second home.”

Amazon employs more than 380,000 people worldwide, with around 40,000 of those in Seattle.

Amazon said it wants HQ2 to be in a metropolitan area with a “stable and business friendly environment” with more than 1 million people. The company added that the location should be an urban or suburban location with potential to attract strong technical talent.

Amazon Seattle