Amkor Announces New Site for U.S. Semiconductor Facility in Peoria, Arizona

Amkor Technology announces a new site for its semiconductor advanced packaging and test facility in Peoria, Arizona. The facility will be constructed on a 104-acre site within the Peoria Innovation Core and is expected to start production in early 2028. The company has operated in Greater Phoenix since 1984 and will work with TSMC and other key semiconductor companies to provide advanced manufacturing for industries such as computing, communications, and automotive.

Amkor Technology, Inc. (Nasdaq: AMKR), a leading provider of semiconductor packaging and test services, has announced that its new semiconductor advanced packaging and test facility will be constructed on a 104-acre site within the Peoria Innovation Core in Peoria, Arizona. The company's initial plan to locate the facility at Vistancia Development's Five North at Vistancia was revised following a successful land acquisition by the City of Peoria through a state land auction [1].

The City of Peoria purchased the 835-acre area, labeled "core 2," for $46.7 million on August 27, 2025, and is scheduled to execute a land exchange and other agreements with Amkor on August 28, 2025. This land exchange will give Amkor a 104-acre parcel, significantly larger than its previous designated site of 56 acres. The new location is part of the much larger, roughly 6,700-acre master-planned area of the Peoria Innovation Core [1].

Amkor has invested $2 billion in the new facility and expects to hire thousands of employees in the area. The company's construction timeline and building plans remain firm despite the last-minute location change. Construction is scheduled to begin within days, with production expected to start in early 2028. The facility will span about 2 million square feet, with some structures reaching 118 feet in height. The company aims to complete construction by September 2034 [1][2].

The move addresses community concerns about land use and potential environmental impacts at the initial site in Vistancia. The new site is expected to kickstart the city's plans for the business corridor and contribute to the broader economic development goals of the Peoria Innovation Core [1].

Amkor's decision to relocate to Peoria aligns with the city's ambitious tech hub plans, which include the development of thousands of new jobs and 30,000 new homes over the next two decades. The city had previously floated the idea of developing a municipal airport in the Peoria Innovation Core, but this idea was halted due to compatibility issues with other land uses [1].

Amkor Technology, Inc. is the world’s largest U.S.-headquartered OSAT (Outsourced Semiconductor Assembly and Test) and a global leader in outsourced semiconductor packaging and test services. The company's comprehensive portfolio includes advanced packaging, wafer-level processing, and system-in-package solutions targeting applications for smartphones, data centers, artificial intelligence, automobiles, and wearables [3].

References:
[1] https://finance.yahoo.com/news/amkor-poised-move-proposed-packaging-202137773.html
[2] https://www.stocktitan.net/news/AMKR/amkor-announces-new-site-for-u-s-semiconductor-advanced-packaging-heo1x8ki5om1.html
[3] https://www.bizjournals.com/phoenix/news/2025/08/27/amkor-peoria-plant-relocate-state-auction.html