Its eastern terminus is at State Route 821 in the community of Warner, nearly 1 mile (1.6 km) west of Lower Salem.

Established in the late 1930s, State Route 530 exists entirely within Washington County, passing through rural northern portions of the county while connecting the Lowell with the Lower Salem vicinity.

All of State Route 530 is situated within the northern part of Washington County.

[3][4] SR 530 originally had its eastern end at U.S. Route 21.

Following the removal of US 21 in Ohio circa 1969, SR 530 received a short eastern extension over former US 21 to end at SR 145 at Lower Salem.