PORTLAND — Nearly three dozen post offices and branches in Maine are being reviewed for possible closure.

The financially troubled U.S. Postal Service announced Tuesday that it is studying more than 3,600 offices and branches nationwide for possible closing as it looks to reduce costs.

U.S. Sen. Olympia Snowe says 34 sites in Maine are on the list. They are mostly in rural locations that range from Matinicus island off the coast to St. David in northern Maine to Birch Harbor in eastern Maine.

But the list also includes a post office near downtown Portland.

Snowe says she’s encouraged the Postal Service plans to work with community retailers to continue providing service in affected communities, but she also says it’s important to assess the potential impact of the closures.

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