[1] The Girl Scout Council of the Nation's Capital as we know it today was formed in 1963 and encompassed five area councils that were in existence at that time, plus Calvert and Charles Counties in Maryland, and lone troops in Prince William, Loudoun, and Fauquier Counties in Virginia.

[citation needed] The merger that built GSCNC was very carefully crafted with full consideration given to all the councils and lone troops that were to merge.

Prior to the merger, there was a year-long study made by a group composed of both GSUSA and the local councils.

The purpose of this realignment is to create high-capacity councils, with volunteers, staff and financial resources to serve growing numbers of girls.

In 2006 the Penn Laurel Girl Scout Council in Frederick County, Maryland merged into GSCNC.