Route information | ||||
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Maintained by ODOT | ||||
Length | 13.62 mi[1] (21.92 km) | |||
Existed | 1937–present | |||
Major junctions | ||||
West end | SR 37 in Delaware | |||
East end | SR 656 / CR 52 in Olive Green | |||
Location | ||||
Country | United States | |||
State | Ohio | |||
Counties | Delaware | |||
Highway system | ||||
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State Route 521 (SR 521) is an east–west state highway in central Ohio. Existing entirely within Delaware County, the western terminus of SR 521 is at SR 37 in Delaware. Its eastern terminus is at SR 656 in the hamlet of Olive Green, located approximately five miles (8.0 km) north of Sunbury.