King's Cross Station is the location of platform nine-and-three-quarters. In addition, since number twelve Grimmauld Place is located within a twenty minute walk of King's Cross, it must be located within about a mile of the station. This map shows the area around King's Cross Station, approximately one mile in each direction. Not surprisingly, Grimmauld Place is not labeled. However, St. Pancras Hospital for Tropical Diseases does appear on this map, the name of which is strikingly similar to St Mungo's Hospital for Magical Maladies and Injuries. They are not the same hospital, of course, but it is certainly possible that St Pancras suggested the name for St Mungo's.

This is where James Potter and his parents live.

This is where Remus' Lupin and his mother, father, and little brother live. They have currently moved into a now muggle populated town to make their youngest oblivious to the Wizarding World.

This is where Peter Pettigrew and his family lives.

This is wher Lily Evans, her mother, father, and sister live.

This is the home of Chloe Sutton, her mother, father, and little sister Laira who will be attending Hogwarts this year.

This is where Madeline Redwine and her mother live.