Waterloo Flag

Waterloo

County Seat:
Yes
Area (mi²):
30.053
State:
Iowa

Waterloo is located in Black Hawk County, Iowa. Waterloo has a 2025 population of 252 . It is also the county seat of Black Hawk County . Waterloo is currently declining at a rate of 0% annually and its population has decreased by 0% since the most recent census, which recorded a population of 0 in 2020.

The average household income in Waterloo is $105,926 with a poverty rate of 1.98%. The median age in Waterloo is 40.1 years: 28.8 years for males, and 53.3 years for females. For every 100 females there are 193.0 males.

252
Total Population
8
Density (mi²)

Waterloo Population

Waterloo Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Waterloo includes 100% White, and smaller percentages for and multiracial populations.

Population by Race

White (100%)

Race
Population
Percentage (of total)
White252100%

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 $0. Household income levels show a median of $80,357. The poverty rate stands at 1.98%.

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
Families$98,636$95,965
Married Families$98,636-
Households$80,357$105,926
Non Families-$114,003

$0

Average Income

$80,357

Median Household Income

1.98%

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)