Marshfield is a town in Washington County, incorporated on June 30, 1846 from a portion of Machias.
The main village lies just north of Machias on Maine Route 192 and on the Middle River, which empties into the Machias River. The captured British schooner Margaretta was hidden by being hauled out of sight up the Middle River.
The town is dotted with small lakes and the marshes that reflect its name.
