Lincolnia is a census-designated place (CDP) in Fairfax County, Virginia, United States.

[4] It is bordered to the east by the city of Alexandria, to the south by Franconia, to the southwest by Springfield, to the west by Annandale, to the northwest by Lake Barcroft, and to the northeast by Bailey's Crossroads.

Interstate 395 passes through the southern part of the CDP, with access from Exit 2 (Edsall Road), and Virginia State Route 236 (Little River Turnpike) passes through the center of the CDP.

The CDP border follows Columbia Pike and Holmes Run to the north, its border with the city of Alexandria to the east, Interstate 395, Interstate 495, and the VRE Fredericksburg Line to the south, and Edsall Road, Clifton Street, Braddock Road, and Little River Turnpike to the west.

20.2% of all households were made up of individuals, and 4.8% had someone living alone who was 65 years of age or older.

The historical structure is still standing, now incorporated into Lincolnia Senior Center.