Silicon Forest

Silicon Forest is a Washington County cluster of high-tech companies located in the Portland metropolitan area in the U.S. state of Oregon.

In the greater Portland area, these companies have traditionally specialized in hardware — specifically test-and-measurement equipment (Tektronix), computer chips (Intel and an array of smaller chip manufacturers), electronic displays (InFocus, Planar Systems and Pixelworks) and printers (Hewlett-Packard Co, Xerox and Epson).

[4] Tektronix and ESI both started out in Portland proper, but moved to Washington County in 1951 and 1962, respectively, and developed sites designed to attract other high-tech companies.

[4] Floating Point Systems, co-founded by three former Tektronix employees in Beaverton in 1970, was the first spin-off company in Silicon Forest and the third (after Tek and ESI) to be traded on the NYSE.

Intel's headquarters remain in Santa Clara, California, but in the 1990s the company began moving its most advanced technical operations to Oregon.

Intel's Ronler Acres campus in Hillsboro, Oregon
Mentor (A Siemens Business) headquarters in Wilsonville
Genentech facility in Hillsboro
Former SolarWorld US headquarters in Hillsboro , which closed in 2017 and was later used by SunPower, until 2021