When I started at Esri (we called it "E.S.R.I." back then, or even "Environmental Systems Research Institute") there were somewhere between 100 and 200 employees. Today Esri has approximately 2,700 employees in the United States, 1,900 of whom are based at the corporate headquarters in Redlands, California, the original home of ARC/INFO and now the ArcGIS System. Beyond the corporate anchor in Redlands, there are 10 regional offices in the United States (plus scattered satellites), more than 80 international distributors, and users in more than 150 countries.
Esri is located in southern California, approximately 60 miles east of Los Angeles. Here's a detailed map of the Redlands corporate campus, zoom around and see where we're at.
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About the map
The map was authored using the ArcGIS.com map viewer and uses the ArcGIS Online World Topographic map.