NCO operates an international network of over 100 customer contact centers.
| Country | Locations |
| United States | Alabama, Arizona, Arkansas, California, Colorado, Delaware, Florida, Georgia, Hawaii, Illinois, Indiana, Kansas, Louisiana, Maryland, Massachusetts, Michigan, Missouri, North Carolina, Nevada, New Jersey, New York, Ohio, Oklahoma, Oregon, Pennsylvania, Tennessee, Texas, and Virginia |
Antigua Australia | St. John's New South Wales, Queensland, South Australia, Victoria, Western Australia |
| Barbados | Bridgetown |
| Canada | Alberta, British Columbia, New Brunswick, Ontario, Quebec |
| India | Mumbai |
| Panama | Panama City |
| Philippines | Quezon City |
Puerto Rico | Hato Rey |
| United Kingdom | Preston, Solihull |