Waterloo

County:: Jefferson County
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.

Demographics

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

Population by Race

White

Two or more races

Native Hawaiian or Pacific Islander

Native American

Asian

Other race

Black or African American

Race	Population	Percentage (of total)
White	2,873	81.11%
Two or more races	479	13.52%
Native Hawaiian or Pacific Islander	77	2.17%
Native American	62	1.75%
Asian	27	0.76%
Other race	24	0.68%
Black or African American	0	0%

Waterloo Marital Status

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