Bay Area tech since the 1960s · Tomorrow, As Usual

The dataset covers headquarters, branches, offices, research and development sites, and manufacturing locations, while distinguishing documented workplaces from city-level presence and estimated or unverified records. It includes all recorded years, with filters for industry and employer scope, and treats gaps as missing evidence rather than confirmed closures. The map uses 2024 U.S. Census geography and five-year timeline steps, with a “Latest” view for 2026. It matters because the record offers a long-run view of where large technology employers have operated across the region, though bubbles represent locations rather than employee totals. Next, users can explore individual years, search the company directory, and click locations for dated evidence and sources.