Since you asked. Maybe more now, in 2011.
As of 2006, Deere & Company employs approximately 47,000 people in 27 countries worldwide, including the United States, Australia, Turkey, Canada, United Kingdom, China, France, Germany, Spain, Italy, India, Poland, Mexico, Morocco and South Africa, among many others. Inside the United States, the company's primary locations are its administrative center in Moline, Illinois, as well as various locations in the Midwest and southeastern United States. Most manufacturing sites are in Iowa or Illinois, as well as locations in Europe.