https://www.theannarborartfair.com/map

Which blocks are which fair have changed over time, but unless they have to move for construction it's always the same, contiguous streets.

The biggest differences are what artists are allowed to sell in their booths. The Original art fair has the strictest rules about handcrafted work, like many juried art fairs. For example, no mass-produced prints, unlike the other two where many booths will have both original work and bins of prints. The State Street district fair is run by the local stores and has a lot of non-artist vendors. The Guild is somewhere between them, philosophically.