Old Country Road begins as the north–south Herricks Road (unsigned
CR 8) curves to the east. It passes by the
Nassau County government buildings in
Mineola and northern
Garden City around its intersection with Mineola Boulevard/Franklin Avenue (unsigned
CR 5A). It then crosses
Glen Cove Road/Clinton Road (unsigned
CR 1), passing by a series of major shopping centers in
Carle Place and
Westbury including
Roosevelt Field Mall and
The Mall at the Source. It passes through
Hicksville just south of where the
concurrency between
NY 106 and
NY 107 ends. It intersects
NY 135 in
Plainview and briefly overlaps Round Swamp Road (unsigned
CR 110) before continuing into western
Suffolk County. Old Country Road overlaps Round Swamp Road before crossing the Nassau-Suffolk County Line at the same time as the
Long Island Expressway at exit 48. The route has a junction with
NY 110 in
Melville. Between Foxhurst Road and
CR 35 the Dix Hills Road bridge goes over both Old Country Road and
Northern State Parkway in
Dix Hills. A connecting road between Old Country & Dix Hills Road exists. The road ends at a junction with
NY 25.
Route marker In the mid-1970s, Nassau County officials opted to remove all county route signs instead of funding replacements that were compliant with the federal government's
Manual on Uniform Traffic Control Devices. ==Major intersections==