A historical record of Bay Area workplaces for employers with more than 1,000 employees worldwide in at least one documented year. This is the company’s total workforce, not staff at each location.
By T. Udell · Research updated November 5, 2026
No matching location evidence for this selection.
This does not establish that companies closed.
Loading locations…Modern geography · US Census 2024 · Drag to pan
Marker color / typeHQ HeadquartersBR BranchOF OfficeRD Research / developmentMF Manufacturing? Type not established
About the bubbles and this research sample
Who is included: employers with more than 1,000 worldwide employees in at least one sourced year and a documented Bay Area workplace. All records includes unresolved and outside-tech cases; use the scope and industry filters to narrow the sample.
Reading the map: bubbles show workplaces or approximate city presence, not employee totals. Hollow bubbles are city-level records; cluster numbers count distinct employers. Click a bubble for dated evidence and sources. The dashed rectangle marks the study extent, not complete coverage.
Gaps are not closures: supported presence intervals remain visible; short carry-forwards are labeled estimated. Older observations appear only with “Show last-known locations,” and remain unverified. Confirmed closures or departures suppress the affected locations. All recorded years combines observations from different dates.
Navigation: drag to pan; use +/− or Ctrl+scroll to zoom. Keyboard: arrows, +/− and Home. The timeline advances in five-year steps; Latest shows 2026. Roads and boundaries are US Census 2024 geography, not historical reconstructions. City positions remain approximate at every zoom.