Waterloo

County:: Black Hawk County
County Seat:: Yes
Area (mi²):: 61.595
State:: Iowa

Waterloo is a city located in Black Hawk County, Iowa. Waterloo has a 2025 population of 66,160. It is also the county seat of Black Hawk County. Waterloo is currently declining at a rate of -0.34% annually and its population has decreased by -1.66% since the most recent census, which recorded a population of 67,275 in 2020.

The average household income in Waterloo is $76,562 with a poverty rate of 16.4%. The median age in Waterloo is 36.6 years: 36 years for males, and 37.3 years for females.

Demographics

The racial composition of Waterloo includes 69.13% White, 17.19% Black or African American, 3.63% other race, and smaller percentages for Asian, Native Hawaiian or Pacific Islander, Native American and multiracial populations.

Population by Race

White

Black or African American

Two or more races

Other race

Asian

Native Hawaiian or Pacific Islander

Native American

Race	Population	Percentage (of total)
White	46,280	69.13%
Black or African American	11,508	17.19%
Two or more races	3,818	5.7%
Other race	2,429	3.63%
Asian	1,758	2.63%
Native Hawaiian or Pacific Islander	706	1.05%
Native American	448	0.67%

Waterloo Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Waterloo's average per capita income is $42,506. Household income levels show a median of $56,344. The poverty rate stands at 16.4%.

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	$88,848	-
Families	$73,224	$93,941
Households	$56,344	$76,562
Non Families	$39,997	$50,852

$42,506

Average Income

$56,344

Median Household Income

16.4%

Poverty Rate