Why is there no District 13?

Why is there no District 13? Located in far northeastern part of the country, District 13 was widely thought to have been destroyed by the Capitol during the climax of the First Rebellion (74 years prior to the events of The Hunger Games trilogy).

Located in far northeastern part of the country, District 13 was widely thought to have been destroyed by the Capitol during the climax of the First Rebellion (74 years prior to the events of The Hunger Games trilogy).