Created in 1974, the ward elected one councillor using the first-past-the-post voting electoral system.
The ward produced strong results for Labour with the party holding the seat at two of the three elections.
It was also one of the Scottish Labour Party's (SLP) few successes in the 1977 local elections.
The Old Cumnock Parish ward was created in 1974 by the Formation Electoral Arrangements from the previous Old Cumnock electoral division of Ayr County Council.
[1] Following the Initial Statutory Reviews of Electoral Arrangements in 1981 the ward was abolished and replaced by two new wards – Cumnock South and Old Cumnock and Cumnock West and Auchinleck.