Lengby (pronounced lang - bee) is a city in Polk County, Minnesota, United States. It is part of the Grand Forks ND-MN Metropolitan Statistical Area. The population was 92 at the 2020 census.

History

The Lengy post office has been serving the community since 1898, and the city once had a railroad depot.

In 1980, Jean Hilliard miraculously survived six hours of freezing temperatures at subzero degrees; her remarkable story was later featured on the television show Unsolved Mysteries.

Geography

According to the United States Census Bureau, the city has a total area of , all land.

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|footnote=U.S. Decennial Census<br>2020 Census