 Port Hadlock-Irondale is located in northeastern Jefferson County at (48.036614, -122.774938), on the Quimper Peninsula, an arm of the northeast corner of the Olympic Peninsula.The CDP includes the communities of Port Hadlock and Irondale, plus part of Chimacum, all of which form what is locally known as the "tri-area".Irondale is in the northeast corner of the CDP, and Port Hadlock is adjacent to it in the east part of the CDP; both communities abut Port Townsend Bay.