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Waterloo is a city in and the county seat of Black Hawk County, Iowa, United States. [2] . As of the 2020 United States Census the population was 67,314, making it the eighth-most populous city in the state. [3] Waterloo comprises a twin conurbation with neighbor municipality Cedar Falls.
Located in the Upper Midwest, Waterloo is the major metro of the Cedar Valley Region of Northeast Iowa. As the Black Hawk County Seat, Waterloo is the hub for government, healthcare, education, employment, and retail for a region with a labor force draw of over 300,000.
Waterloo, city, seat (1855) of Black Hawk county, northeastern Iowa, U.S., along both sides of the Cedar River, adjacent to Cedar Falls on the west. The site was first settled in 1845 as Prairie Rapids, and the name Waterloo was adopted in 1851.
Create your experience in Waterloo, Iowa. Explore our trails, dine at unique locally-owned restaurants or attend events like Iowa Irish Fest. There are so many things to do in Waterloo.