on the gen 2&3 the bottom of the screen tells the street your on. then there's an info button that has coordinates, not sure about city and state.
I had the same question except for a Prius Prime. Hope I'm not hijacking this thread. Posted via the PriusChat mobile app.
On the Prius Prime Advanced, the name of the street you're traveling on shows up at the bottom right of the full-screen map. When using the nav system, touching the symbol at the very bottom right toggles info about the number of miles and driving time to your destination. I had problems when I moved the map by dragging it on the screen and could not get the map back to where it showed my current position. I learned that the "home" touch button located above the "menu" button right of the screen returns the map to be centered on your current location. (In spite of its name, it does not route you home or show your stored home position on the map. Those functions are available elsewhere in the system.)
Your current location is marked on the map as a circle with the arrow pointing in the direction you're facing. If you're talking about the address, one way is to go navigate to a point on the map and just click over your icon to get an address. (may have to press an INFO button or something to get the address to display)