While I don't know that specific hub, my original UPS hub in the Chicago area had 4 centers, each with its own management team. And yes....Commerce City has 8 centers, each with its center manager, on-roads and OMS(s). The delivery area stretches all the way west to Broomfield, Colorado (about 30 miles from the Hub); somewhere east of Aurora, Colorado; south to Belleview Avenue in the Denver Tech Center and north to a place that escapes me at the moment. But yes, basically the Denver metro area. There's a hub in the south suburbs that serves from Belleview to some point where the Colorado Springs operation picks up. I was once told Commerce is the 4th or 5th largest UPS hub.
The driving wait time has gone up and down at Commerce in the last several years. When I left in October 2007, I think it was about 6 months. -Rocky