Apple Inc. is planning to spend $1 billion to build a new 133-acre corporate campus in North Austin that initially will employ up to 5,000 people, cementing Austin's status as the high-tech company's largest hub outside of its California headquarters.

The facility — which will be less than a mile from Apple's existing main Austin campus on Parmer Lane — eventually could expand to accommodate up to 15,000 workers, the company said. Apple employs about 6,200 people in Austin now. Counting contractors, its current Austin workforce numbers about 7,000.

The new Austin campus is part of a wider Apple expansion that will see the tech giant build new facilities in Seattle, San Diego and Los Angeles with "over 1,000 employees" each, and add "hundreds of new jobs" in New York, Pittsburgh, Boulder, Colo., Boston and Portland, Ore., the company said. None of those facilities will be as big as the new Austin campus.

“Apple is proud to bring new investment, jobs and opportunity to cities across the United States and to significantly deepen our quarter century partnership with the city and people of Austin,” Tim Cook, Apple’s CEO, said in a written statement. “Talent, creativity, and tomorrow’s breakthrough ideas aren’t limited by region or zip code, and, with this new expansion, we’re redoubling our commitment to cultivating the high-tech sector and workforce nationwide.”

Apple is in line to receive as much as $25 million in taxpayer-funded grants for the new Austin campus from the state's deal-closing Texas Enterprise Fund, based on investment and job creation at the site. It also is seeking a 15-year property tax abatement from Williamson County, where the project is located just over the line from Travis County, that could be worth tens of millions of dollars over the life of the deal, although specific numbers weren't available Wednesday.

Apple isn't receiving any financial incentives from the city of Austin.

Apple — which is one of the most valuable companies in the world with a market capitalization of about $803 billion — was pledged an estimated $36 million in combined incentives from the state, the city of Austin and Travis County in 2012, when it agreed to build its existing Parmer campus. The company has received about $21.6 million of the money so far, including $15.75 million of $21 million pledged from the Texas Enterprise Fund.

The announcement of Austin as the site for the new Apple campus capped a nearly yearlong search by the tech giant that took place concurrently, but with a much lower profile, as Amazon Inc.'s splashy sweepstakes to pick new corporate locations. Austin was named to Amazon's list of 20 finalists but lost out to sites in New York and Virginia, which pledged incentive packages valued at $1.7 billion and $573 million, respectively, for the promise of 25,000 Amazon jobs each and billions of dollars in investment.

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Apple had said last January that it would invest more than $30 billion in the United States over the next five years and create more than 20,000 new jobs, through expansion of some of its existing corporate campuses and by opening a new one. At the time, analysts speculated that a large new facility wouldn't be built in either California — where Apple employs about 25,000 people at its Silicon Valley headquarters — or in Texas, where Austin already is its second-largest hub worldwide.

The company's "decision to expand operations in our state is a testament to the high-quality workforce and unmatched economic environment that Texas offers," Gov. Greg Abbott said in a written statement. "I thank Apple for this tremendous investment in Texas, and I look forward to building upon our strong partnership to create an even brighter future for the Lone Star State.”

The new Austin campus will include about 3 million square feet of space in multiple buildings. It is being developed on a 133-acre site, 50 acres of which Apple said will be earmarked for a nature preserve. The company also noted that the campus "will be powered by 100 percent renewable energy."

Site preparation will start next year, Apple said, and employees will begin moving in to the first buildings in 30 to 36 months.

Jobs at the facility will include "a broad range of functions, including engineering, R&D, operations, finance, sales and customer support," the company said. It didn't disclose the average salary, although Apple's city incentive agreement for its existing Parmer campus calls for workers' annual pay to average $58,000 this year.

“Apple has been a vital part of the Austin community for a quarter century, and we are thrilled that they are deepening their investment in our people and the city we love,” Austin Mayor Steve Adler said in a written statement. “Apple and Austin share a creative spark and a commitment to getting big things done. We share their commitment to diversity and inclusion. We’re excited they are bringing more middle-skilled jobs to the area. And we’re particularly gratified by their commitment to providing a great place to work for a large and growing number of America's veterans.”

Apple's existing Parmer campus houses its Americas Operations Center, responsible for running the company’s business operations for the entire Western Hemisphere, as well as other functions. Apple has said elements of nearly all of its business and corporate divisions are represented in Austin.

In addition to the Parmer campus, Apple also has a smaller but still significant operation in Southwest Austin, at the Capital Ridge office building near Loop 360 and Bee Cave Road. Apple has had a presence in Austin since 1992.