IBEW Local 43 jurisdiction is indicated above by the lilac shaded portion marked 43.  The following is a detailed description of the jurisdiction by county:

Cayuga – Locke, Sempronius, Summerhill, Sterling, Victory and Ira

Chenango – Columbus, New Berlin and Sherburne

Cortland – Entire County

Herkimer – Entire County

Madison – Entire County

Oneida – Entire County

Onondaga – all except Skaneateles and Elbridge

Oswego – Entire County

Otsego – Plainfield, Richfield, Springfield, Cherry Valley, Roseboom, Middlefield, Otsego, Exteter, Edmunsen, Burlington, Pittsfield and New Lisbon

Tompkins – Groton only

Wayne – Huron, Wolcott, Rose and Butler