Waterloo is a city located in Black Hawk County, Butler County, and Grundy County Iowa. Waterloo has a 2024 population of 65,855. It is also the county seat of Black Hawk County. Waterloo is currently declining at a rate of -0.53% annually and its population has decreased by -2.1% since the most recent census, which recorded a population of 67,269 in 2020.
The average household income in Waterloo is $73,324 with a poverty rate of 17.39%. The median rental costs in recent years comes to - per month, and the median house value is -. The median age in Waterloo is 36.7 years, 35.9 years for males, and 37.6 years for females.
According to the most recent ACS, the racial composition of Waterloo was:
White
Black or African American
Two or more races
Other race
Asian
Native Hawaiian or Pacific Islander
Native American
Household Type | Count | Average Size | Owner | Renter |
|---|---|---|---|---|
| All | 28,947 | 2.29 | 60.8 | 39.2 |
| Non Family | 12,454 | 1.21 | 47.9 | 52.1 |
| Married | 10,997 | 2.98 | 83.5 | 16.5 |
| Female | 3,908 | 3.41 | 45.4 | 54.6 |
| Male | 1,588 | 3.31 | 42.3 | 57.7 |
2.97
Average Family Size
2.29
Average Household Size
60.8%
Rate of Home Ownership
Married
Male
Female
NonFamily
owner
renter
Male
Female
Less Than 9th Grade
9th to 12th Grade
High School Graduate
Some College
Associates Degree
Bachelors Degree
Graduate Degree
High School Graduation Rate
Bachelors Rate
The highest rate of high school graduation is among white people with a rate of 93.27%.
The highest rate of bachelors degrees is among white people with a rate of 25.32%.
All
Male
Female
$40,861
Average Earnings
$45,114
Average Male
$35,882
Average Female
Only English
Spanish
Other Indo-European Languages
Asian and Pacific Island Languages
Other Languages
87.13% of Waterloo residents speak only English, while 12.87% speak other languages. The non-English language spoken by the largest group is Other Indo-European, which is spoken by 5.18% of the population.
rate
17.39%
Overall Poverty Rate
15.09%
Male Poverty Rate
19.66%
Female Poverty Rate
The race most likely to be in poverty in Waterloo is Islander, with 43.46% below the poverty level.
The race least likely to be in poverty in Waterloo is Native, with 12.07% below the poverty level.
The poverty rate among those that worked full-time for the past 12 months was 3.87%. Among those working part-time, it was 21.95%, and for those that did not work, the poverty rate was 25.13%.
Married
Widowed
Divorced
Separated
NeverMarried
42.5%
Overall Marriage Rate
43.4%
Male Marriage Rate
41.6%
Female Marriage Rate
male
female
The age group where males are most likely to be married is Over 65, while the female age group most likely to be married is 55-64.
Married
Widowed
Divorced
Separated
NeverMarried
Less Than 9th Grade
High School Graduate
Some College
Bachelors or Greater
10.43%
Veteran Poverty Rate
33.46%
Veteran Disability Rate
LaborForceParticipation
65.2%
Labor Force Participation
60.5%
Employment Rate
7.1%
Unemployment Rate
LaborForceParticipation
LaborForceParticipation
Europe
Asia
Africa
Oceania
Latin America
North America
Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.
Europe
Asia
Africa
Oceania
Latin America
North America
70.2%
Born in Waterloo
90.73%
Native Born
9.27%
Foreign Born
5.22%
Non Citizen
4.05%
Naturalized
90.73% of Waterloo residents were born in the United States, with 70.2% having been born in Iowa. 5.22% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Europe.
Year | Population | Growth | Growth Rate |
|---|---|---|---|
| 2029 | 64,087 | -354 | -0.55% |
| 2028 | 64,441 | -353 | -0.54% |
| 2027 | 64,794 | -354 | -0.54% |
| 2026 | 65,148 | -353 | -0.54% |
| 2025 | 65,501 | -354 | -0.54% |
| 2024 | 65,855 | -353 | -0.53% |
| 2023 | 66,208 | -354 | -0.53% |
| 2022 | 66,562 | -350 | -0.52% |
| 2021 | 66,912 | -357 | -0.53% |
| 2020 | 67,269 | -132 | -0.2% |
| 2019 | 67,401 | -312 | -0.46% |
| 2018 | 67,713 | -60 | -0.09% |
| 2017 | 67,773 | -366 | -0.54% |
| 2016 | 68,139 | -506 | -0.74% |
| 2015 | 68,645 | -48 | -0.07% |
| 2014 | 68,693 | -19 | -0.03% |
| 2013 | 68,712 | 170 | 0.25% |
| 2012 | 68,542 | -12 | -0.02% |
| 2011 | 68,554 | 66 | 0.1% |
| 2010 | 68,488 | -259 | -0.38% |
| 2000 | 68,747 | 2,280 | 3.43% |
| 1990 | 66,467 | -9,518 | -12.53% |
| 1980 | 75,985 | 452 | 0.6% |
| 1970 | 75,533 | 3,778 | 5.27% |
| 1960 | 71,755 | 6,557 | 10.06% |
| 1950 | 65,198 | 13,455 | 26% |
| 1940 | 51,743 | 5,552 | 12.02% |
| 1930 | 46,191 | 9,961 | 27.49% |
| 1920 | 36,230 | 9,537 | 35.73% |
| 1910 | 26,693 | 14,113 | 112.19% |
| 1900 | 12,580 | 5,906 | 88.49% |
| 1890 | 6,674 | 1,044 | 18.54% |
| 1880 | 5,630 | 1,293 | 29.81% |
| 1870 | 4,337 | 0 | 0% |