U.S. Route 1 in South Carolina

U.S. Highway 1
US 1 highlighted in red
Route information
Maintained by SCDOT
Length	170.540 mi[1][2][3][4][5][6][7] (274.458 km)
Existed	1927[citation needed]–present
Major junctions
South end	US 1 / US 25 / US 78 / US 278 / SR 10 / SR 121 at the Georgia line in North Augusta
Major intersections	I-520 in North Augusta I-20 near Aiken US 178 / SC 391 in Batesburg-Leesville I-20 in Lexington I-26 in West Columbia US 21 / US 176 / US 321 in Columbia I-20 / I-77 near Columbia US 601 in Lugoff US 521 in Camden US 52 near Cheraw
North end	US 1 at the North Carolina line near Wallace
Location
Country	United States
State	South Carolina
Counties	Aiken, Saluda, Lexington, Richland, Kershaw, Chesterfield, Marlboro
Highway system
United States Numbered Highway System List Special Divided South Carolina State Highway System Interstate US State Scenic
← SC 917 → SC 2

U.S. Highway 1 (US 1) is a 170.540-mile (274.458 km) north–south U.S. Highway that crosses South Carolina from southwest to northeast and connects the cities of North Augusta, Aiken, Lexington, Columbia, Camden, and Cheraw.

The route parallels Interstate 20 (I-20) closely from the Georgia border to Camden, where I-20 turns to a more directly easterly direction. From Camden to the North Carolina border, US 1 is the highest capacity route through much of the Sandhills region.