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is a city in Grand Forks County, North Dakota in the United States. It is part of the "Grand Forks, ND-MN Metropolitan Statistical Area" or "Greater Grand Forks". The population was 243 at the 2000 census. Gilby was founded in 1887.
According to the United States Census Bureau, the city has a total area of 0.2 square miles (0.5 km²), all of it land.