Hounsfield is a town in Jefferson County, New York, United States.

The land comprising the town was purchased by Augustus Sackett on 20th June 1801 from a foreclosure of two prior landowners.

[8] The town and its citizens were deeply involved in the War of 1812, primarily due to the two battles that took place at Sackets Harbor.

[9] In 1814, the community of Sackets Harbor, by Black River Bay, set itself off from the town by becoming an incorporated village.

9, Stevenson-Frink Farm, Storrs' Harbor Naval Shipyard Site, and Sulphur Springs Cemetery are listed on the National Register of Historic Places.

Mill Creek enters Black River Bay near Sackets Harbor.

New York State Route 3 is a north-south highway in the western part of Hounsfield.