You can find the name and address of your representative by going to Congress.org. When addressing your letter, use the following format:
For Your Senator:
The Honorable (full name)
(Room Number) (Name) Senate Office Building
United States Senate
Washington, D.C. 20510
Dear Senator (last name):
For Your House Representative:
The Honorable (full name)
(Room Number) (Name) House Office Building
United States House of Representatives
Washington, D.C. 20515
Dear Representative (last name):
Keep it Simple
Your letter should address a single topic or issue. Typed, one-page letters are best. Many PACs (Political Action Committees) recommend a three-paragraph letter structured like this:
The best letters are courteous, to the point, and include specific supporting examples.
From: http://usgovinfo.about.com/od/uscongress/a/letterscongress.htm
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