A lot of ink has been spilled discussing and cussing the U.S. Postal Service’s plan to close 82 mail processing centers next year. But the three images below tell the story in a nutshell.

David Williams, USPS’ vice president of networks, showed these slides in a recent presentation to mailers about the “Phase II” consolidations scheduled to begin in January.

The first slide demonstrates why: The volume of highly profitable single-piece First Class letters is barely half of what it was seven years ago.

The reduced volume is a major reason the Postal Service needs fewer sortation centers — and the $750 million annual savings it estimates the consolidations will generate. (“AMP” refers to Area Mail Processing studies, USPS’s process for evaluating the expected impact and savings from potential plant consolidations.)

The second slide demonstrates that the plants to be closed are spread throughout the country and are primarily Processing & Distribution Centers. Williams said the closings will be part of another “methodical, measured transition” and that, as usual, affected employees will be offered “options for staying with the Postal Service” rather than being laid off.

The third slide shows the end result: By next October, the Postal Service plans to have only 239 processing centers, down 64% since 2007.

via Dead Tree Edition: USPS Network Consolidation: A Tale of 3 Pictures.