Argyle is a city located in Marshall County, Minnesota, along the Middle River. As of the 2000 census, the city had a total population of 656. Old Mill State Park is nearby.
According to the United States Census Bureau, the city has a total area of 4.0 km2 (1.5 mi2). 4.0 km2 (1.5 mi2) of it is land and none of it is covered by water.