The boundaries of the Broad Run District are as follows:
Beginning at the intersection of the centerline of Goose Creek and Virginia State Route 7; thence departing the centerline of State Route 7 and running northeasterly down the centerline of Goose Creek to its mouth on the southwesterly bank of the Potomac River; thence departing the centerline of Goose Creek and running southeasterly along the bank of the Potomac River, being the boundary between the States of Virginia and Maryland, to the intersection of such bank with the westerly line of Fairfax County; thence departing the southerly bank of the Potomac River and running southwesterly along the line of Fairfax County to the centerline of Virginia State Route 604; thence departing the line of Fairfax County and running northwesterly along the centerline of State Route 604, the use of a portion of which has been discontinued, to the centerline of Brandon Avenue; thence running southwesterly along the centerline of Brandon Avenue to the centerline of East Juniper Avenue; thence departing the centerline of Brandon Avenue and running northwesterly along the centerline of East Juniper Avenue to the centerline of Virginia State Route 846, Sterling Boulevard; thence departing the centerline of East Juniper Avenue and running northeasterly along the centerline of State Route 846 to the centerline of the aforementioned Virginia State Route 7; thence departing the centerline of State Route 846 and running northwesterly along the centerline of State Route 7 to the point of beginning.