Baker Bay is a bay located just inside the mouth of the Columbia River, behind Cape Disappointment on the north side of the river, in Pacific County, Washington and Clatsop County, Oregon.

[1] Located on Baker Bay is the city of Ilwaco and the census-designated place (CDP) Chinook.

The bay was named in 1792 by William Robert Broughton, captain of HMS Chatham and part of the Vancouver Expedition.

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