For those wanting to call around the country to find a Prius

There are 10 Toyota Regional Headquarters. To find all of the dealers in a region go to the Toyota.com webpage, select Prius, enter the zipcode for each region, click "Build your own". After you get to the regional page, in the upper right there is a "Dealers" tag. Click on this tag to get all of the dealers in that region. For the independent regions (Southeast and Gulf States), I am not sure how to find all of those dealers.

Northern California - 94203
Southern California - 90210
Denver (Colorado, New Mexico, Utah, Arizona, Wyoming, Nevada) - 80002
Chicago - (Illinois, Wisconsin, Minnesota, Indiana) - 62701
Central Atlantic - (Penn, S. New Jersey, W. Virginia, Virginia, DC, Maryland, Delaware) - 20815
New England (Mass, New Hampshire, Rhode Island, Maine, Vermont) - 02108
Kansas City (Missouri, Kansas, Iowa, Nebraska, N. Dakota, S. Dakota) - 64116
Greater New York (New York, New Jersey(NYC Area)) - 07302
Ohio (Ohio, Michigan, Kentucky, Tennessee) - 44102
Oregon (Oregon, Washington) - 97201

Independents:
SouthEast Toyota Distributors, LLC (Alabama, Florida, Georgia, N. Carolina, S. Carolina) - 33602

Gulf States Toyota (Louisiana, Texas, Arkansas, Oklahoma, Mississippi) - 75201

 

Sorry I missed that one:

Northwest (Idaho, Montana) - 59601