Derries is a townland located in the Electoral Division of Glenties, within the Civil Parish of Killybegs Lower, the Barony of Boylagh, and County Donegal. Its Irish name is Na Doirí.

It spans an area of 1,605,134 square metres, which equates to approximately 0.62 square miles or 396 acres.

Derries shares its borders with the following townlands:

• Kilrean Upper to the south.

• Meenachallow to the east.

• Mullantiboyle to the north.

• Tullyard to the west.