The United States Postal Service has announced “efficiency Improvements” that eliminate 7,500 administrative and executive positions across the organization and close district offices in Columbus, OH, South East Michigan, Northern Illinois, South East New England, South Georgia, Big Sky and Albuquerque. The Postal Service says the closing will not affect customer service, mail delivery, Post Office operations or ZIP codes.

The Postal Regulatory Commission has released its advisory opinion (PDF) on the Postal Service proposal to move to a five-day delivery schedule. The Postal Service would like to reduce delivery schedule will provide a $3.1 billion annual saving. The Postal Regulatory Commission opinion concludes that cost savings projections were overstated and the five-day delivery schedule did not evaluate impacts on rural and remote areas.

“The Commission’s opinion is advisory only and therefore, is not a final determination on the merits of our proposal. We remain convinced of our findings. As such, we will also continue to press our case with the Congress on this matter.” Postmaster General Patrick R. Donahoe said in a statement.