Waterloo, Iowa

Waterloo, Iowa
Location within Black Hawk County and Iowa
Waterloo
Waterloo
Coordinates: 42°30′50″N 92°20′46″W / 42.51389°N 92.34611°W / 42.51389; -92.34611
CountryUS
StateIowa
CountyBlack Hawk
Incorporated1868
Area
 • City
63.43 sq mi (164.29 km2)
 • Land61.59 sq mi (159.53 km2)
 • Water1.84 sq mi (4.76 km2)
Elevation
883 ft (269 m)
Population
 (2020)
 • City
67,314
 • Rank8th in Iowa
 • Density1,092.8/sq mi (421.95/km2)
 • Metro
169,895
Time zoneUTC−6 (CST)
 • Summer (DST)UTC−5 (CDT)
ZIP codes
50701-50707
Area code319
FIPS code19-82425
GNIS ID468951
Websitecityofwaterlooiowa.com

Waterloo is a city in and the county seat of Black Hawk County, Iowa, United States. It is the eighth-most populous city in Iowa, with a population of 67,314 at the 2020 census. Waterloo comprises a twin conurbation with neighboring municipality Cedar Falls, and is the larger of the two cities. The Waterloo – Cedar Falls metropolitan area has an estimated 170,000 residents.

Waterloo is a major manufacturing, commercial, and cultural center in Northeast Iowa. John Deere, a brand renowned for its tractors, engines, and other agricultural machinery, has been manufacturing its products in the city for over a century. Locally known as the “Factory City,” Waterloo has played a significant role in the production of these important agricultural tools. Waterloo is bisected by the Cedar River flowing southeastward.