Danube is a city in Renville County, Minnesota, United States. The population was 505 at the 2010 census. Danube was founded in 1901 and held a celebration for its centennial in 2001 where it recorded its first-ever fireworks display.
According to the United States Census Bureau, the city has a total area of 0.5 square miles (1.2 km²), all land.
As of the census of 2010, there were 505 people residing in the city. The population density was 1,044.4 inhabitants per square mile (403.3/km²). There were 227 housing units at an average density of 469.5 per square mile (189.2/km²). The racial makeup of the city was 97.43% White, 1.2% Black or African American, 0.40% from other races, and 0.99% from two or more races. Hispanic or Latino of any race were 6.73% of the population.