Grandin is a city in Cass and Traill counties in the State of North Dakota, founded in 1881. The population was 186 at the 2020 census. It is now a bedroom community for the nearby Fargo-Moorhead area.

Cass County is a county in the U.S. state of North Dakota. As of the 2020 census, the population was 184,525. Cass County is the most populous county in North Dakota, accounting for nearly 24% of the state's population. The county seat is Fargo, the state's most populous city. The county is named for George Washington Cass, president of the Northern Pacific Railway from 1872 to 1875. It is the only Cass County in the United States that is not named after Lewis Cass.