Map of State Line CDP, Pennsylvania

State Line is an unincorporated community and census-designated place (CDP) in Antrim Township, Franklin County, Pennsylvania, United States. It is next to the Maryland state line along Interstate 81 and U.S. Route 11 between Hagerstown, Maryland, and Greencastle. As of the 2020 census the population was 2,804.

State Line was originally called Middleburg, and under the latter name laid out in 1812, and named for its location between Greencastle and Hagerstown, Maryland. The present name comes from the fact that the community is located on the Maryland-Pennsylvania state line. A post office called State Line was established in 1830.

State Line CDP overview:
Name:	State Line CDP
LSAD Code:	57
LSAD Description:	CDP (suffix)
State:	Pennsylvania
County:	Franklin County
Elevation:	710 ft (220 m)
Total Area:	2,804
Population Density:	989/sq mi (382.0/km²)
ZIP code:	17263
Area code:	717
FIPS code:	4273848
GNISfeature ID:	1217375

Online Interactive Map

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State Line online map. Source: Basemap layers from Google Map, Open Street Map (OSM), Arcgisonline, Wmflabs. Boundary Data from Database of Global Administrative Areas.