Blackduck is a city located in the U.S. state of Minnesota. It is within Beltrami County approximately 24 mi northeast of Bemidji. It has a total area of 1.71 square miles at 47°43′49″N 94°32′52″W. The elevation is 1,398 feet above sea level. As of the 2010 census data, it had a total population of 785. The population density was 460/sq mi . Estimated per capita income in 2016 was $16,605. Recent job growth is positively increased by 1.54 percent. The average travel time is 17 minutes. It has Zip code 56630.