Slight Spoilers.....but hardly... We see in Negan and Dwight's map, the locations of Negan's plan to put groups of 11 fighters in certain spots, with Negan's personal group at the X. I couldn't make out many landmarks on those maps, but to the left you can see Shenandoah Mountain, the crest of which forms the borders of Augusta and Highland Counties. You can actually see Augusta and Rockingham County very faintly written on the map. So, based on these landmarks, here is my best approximation of where the circled locations are. Note Alexandria just south of Washington. Of course this isn't necessarily accurate to the show, but its fairly accurate to the maps.