Longville is a city in Cass County, Minnesota, United States. The population was 156 at the 2010 census. The city was named after its founder Jim Long. The town is roughly 4 hours north of the Twin Cities. It is part of the Brainerd Micropolitan Statistical Area. Minnesota State Highway 84 serves as a main route in the community, and Minnesota State Highway 200 is nearby.
According to the United States Census Bureau, the city has a total area of 0.6 square miles (1.6 km²), of which, 0.6 square miles (1.6 km²) of it is land and 0.04 square miles (0.1 km²) of it (3.23%) is water.
Longville is part of the Northern Minnesota's glacial plain, which was flattened by glaciers during the most recent glacial advance. During the last glacial period, massive ice sheets at least 0.62 miles (1.0 km) thick ravaged the landscape of the state and sculpted its current terrain. The Wisconsin glaciation left 12,000 years ago. These glaciers covered all of Minnesota except the far southeast, an area characterized by steep hills and streams that cut into the bedrock. Thus since the landscape is still recovering from the weight of the glaciers and going through post-glacial rebound and the turmoil this created, the landscape is poorly drained created the numerous lakes and rivers found in Cass County.