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

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