Union Pacific in the 19th century
The original company, the "Union Pacific Rail Road", was incorporated on July 1, 1862, under the Pacific Railroad Act of 1862. President 展开

Union Pacific has owned some of the most powerful locomotives. These include members of the Challenger-type (including the 3985), and the Northern-type (including the 844), as well as the Big Boy steam locomotives (including the 4014). Union Pacific ordered the 展开

Commuter services
When Union Pacific bought out the Chicago & North Western in 1995, it inherited the railroad's Metra commuter rail services in the Chicago metropolitan area: the Union Pacific North Line to Kenosha, Wisconsin 展开

Transient camp and graffiti issues
The City of San Jose, California, threatened Union Pacific with a lawsuit in 2019 after years of … 展开

The Union Pacific system includes hundreds of yards. Most are flat yards used for local switching. Other types of yards include intermodal terminals and hump yards. Most UP … 展开

According to UP's 2007 Annual Report to Investors, at the end of 2007 it had more than 50,000 employees, 8,721 locomotives, and 94,284 freight cars.
Broken down by specific type of car, owned and leased:
• 35,437 展开

21st century
• September 4, 2007: a Union Pacific train derailment split the small town of Sergeant Bluff, Iowa. About 16 cars derailed, most carrying salt that spilled … 展开