Waterloo Flag

Waterloo

County Seat:
No
Area (mi²):
3.794
State:
Wisconsin

Waterloo is a city located in Jefferson County, Wisconsin. Waterloo has a 2026 population of 3,611. Waterloo is currently declining at a rate of -0.06% annually but its population has increased by 3.29% since the most recent census, which recorded a population of 3,496 in 2020.

3.6K
Total Population
952
Density (mi²)
-2 -0.06%
Growth

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)