The cities of Dallas, Plano and Garland, Texas constitute almost all of the Richardson border apart from the municipality's extreme northeastern "panhandle."
The Lake Highlands area of northeast Dallas borders Richardson to the south, North Dallas to the southwest, Far North Dallas to the west, West Plano to the northwest, East Plano to the north, the city of Murphy to the northeast, Sachse to the east, and Garland to the southeast.
Richardson is located at 32°57′56″N 96°42′57″W / 32.965628°N 96.715707°W / 32.965628; -96.715707.
According to the United States Census Bureau, the city has a t...
Source: Wikipedia (as of 04/11/2019). Read more from Wikipedia