Waterloo Flag

Waterloo

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

Waterloo is a city located in Jefferson County, Wisconsin. Waterloo has a 2025 population of 3,690. Waterloo is currently growing at a rate of 1.1% annually and its population has increased by 5.67% since the most recent census, which recorded a population of 3,492 in 2020.

The average household income in Waterloo is $83,157 with a poverty rate of 16.05%.The median age in Waterloo is 38.3 years: 35.7 years for males, and 40.6 years for females.

3.7K
Total Population
973
Density (mi²)
40 1.1%
Growth

Waterloo Population

Waterloo Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Waterloo includes 81.11% White, and smaller percentages for Native Hawaiian or Pacific Islander, Native American, Asian, other race and multiracial populations.

Population by Race

Race
Population
Percentage (of total)
White2,87381.11%
Two or more races47913.52%
Native Hawaiian or Pacific Islander772.17%
Native American621.75%
Asian270.76%
Other race240.68%

Waterloo Marital Status

OverallMalesFemales0%10%20%30%40%50%60%70%80%90%100%

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Waterloo's average per capita income is $50,964. Household income levels show a median of $78,103. The poverty rate stands at 16.05%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.
Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.
Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.
Name
Median
Mean
Married Families$105,299-
Families$93,696$84,710
Households$78,103$83,157
Non Families$53,125$67,037

$50,964

Average Income

$78,103

Median Household Income

16.05%

Poverty Rate

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)