O ntario County routes are not posted with the standard pentagon shields. Alternate or former road names have in many cases been dropped from the common parlance. Ontario County maintains but a small percentage of its highways, with most roads being assinged to the Towns.
County highways are in most cases long-distance arterial roads.
No county roads enter any City or Village in Ontario County. Italicized routes are obsolete designations. 1 Rushville vill. Naples Road 13 Shortsville vill. Becomes SR 941E, 1.14 mi.