False.
The Capital Beltway is located in Washington, D.C. It is the basis of the phrase Inside the Beltway, used when referring to issues dealing with American government and politics.
The Baltimore Beltway is the circumferential highway around Baltimore, Maryland. It is designated as Interstate Route 695 (I-695). The nearby Washington Beltway, often called simply The Beltway, is I-495. It circles the city of Washington, DC. Where the two Beltways are closest to each other, they are less than 20 miles apart.
Inside Outside the Beltway - 1992 was released on: USA: 20 September 1992 (Washington, D.C.)
The cast of The Beltway - 2005 includes: Kirsten Alter as Officer Nick Cannon
The exit from the George Washington Parkway to the beltway (I-495).
I'm pretty sure it's short for "Beltway," as in "Inside the Beltway" of Washington DC where most political/government action takes place.
The cast of Beltway Unbuckled - 2008 includes: David Eisenbach as Himself - Host
"The Beltway" typically refers to the Interstate 495 highway that encircles Washington, D.C. It is known for heavy traffic and is often used as a term to reference the political and social elite associated with the capital region.
According to Paul Bedard of Washington Whispers at U.S. News and World Report, the Fox News Channel cancelled the show in April, 2009: http://www.usnews.com/blogs/washington-whispers/2009/04/30/fox-cancels-beltway-boys.html
The cast of The Beltway Boys - 1998 includes: Morton Kondracke as himself Juan Williams as Himself - Guest Co-Host
I am not sure where this came from but as a resident of Washington DC, this is my thought. Washington DC is surrounded by a highway known as the beltway with an inner and outer loop. The players (important people) of DC are said to be inside the beltway or 'in the loop'. Those 'out of the loop' are not informed about what is happening on Capitol Hill. Just a guess.
The cast of I Married the Beltway Sniper - 2010 includes: Berenice Alfonso as Sarah Ramos David Sommerville as Lee Boyd Malvo