Brooklyn is a city in Poweshiek County, Iowa, United States. The population was 1,468 at the 2010 census. It is located just off U.S. Highway 6 and a few miles north of Interstate 80. Near the center of town Brooklyn boasts a large display of flags from each of the fifty states, the four branches of the military, and a smattering of other sources. The city bills itself as "Brooklyn: Community of Flags."