Waterloo is a city located in Monroe County Illinois. Waterloo has a 2024 population of 11,190. It is also the county seat of Monroe County. Waterloo is currently growing at a rate of 0.41% annually and its population has increased by 1.68% since the most recent census, which recorded a population of 11,005 in 2020.
The average household income in Waterloo is $104,304 with a poverty rate of 5.03%. The median age in Waterloo is 40 years: 38.6 years for males, and 41.5 years for females.
According to the most recent ACS, the racial composition of Waterloo was:
Race | Population | Percentage (of total) |
|---|---|---|
| White | 10,609 | 96.34% |
| Asian | 139 | 1.26% |
| Two or more races | 116 | 1.05% |
| Black or African American | 98 | 0.89% |
| Native American | 25 | 0.23% |
| Other race | 25 | 0.23% |
| Native Hawaiian or Pacific Islander | 0 | 0% |
White
Asian
Two or more races
Black or African American
Native American
Other race
Native Hawaiian or Pacific Islander
Household Type | Count | Average Size | Owner | Renter |
|---|---|---|---|---|
| All | 4,339 | 2.5 | 77.1 | 22.9 |
| Married | 2,418 | 3.05 | 95.9 | 4.1 |
| Non Family | 1,326 | 1.24 | 47.3 | 52.7 |
| Female | 372 | 3.12 | 66.7 | 33.3 |
| Male | 223 | 3 | 68.2 | 31.8 |
2.98
Average Family Size
2.5
Average Household Size
77.1%
Rate of Home Ownership
Married
Male
Female
NonFamily
owner
renter
Male
Female
Education Attained | Count | Percentage |
|---|---|---|
| 9th to 12th Grade | 308 | 4.03% |
| Associates Degree | 777 | 10.18% |
| Bachelors Degree | 1,766 | 23.13% |
| Graduate Degree | 883 | 11.57% |
| High School Graduate | 1,929 | 25.27% |
| Less Than 9th Grade | 49 | 0.64% |
| Some College | 1,923 | 25.19% |
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
Race | Total | High School | Bachelors |
|---|---|---|---|
| White | 7,353 | 7,024 | 2,503 |
| Asian | 117 | 117 | 92 |
| Hispanic | 78 | 78 | 25 |
| 2+ Races | 66 | 66 | 5 |
| Black | 53 | 25 | 24 |
| Other Race | 25 | 25 | 25 |
The highest rate of high school graduation is among asian people with a rate of 100%.
The highest rate of bachelors degrees is among other race people with a rate of 100%.
All
Male
Female
Name | Average | Male | Female |
|---|---|---|---|
| Bachelors Degree | $65,762 | $69,227 | $58,427 |
| Graduate Degree | $83,629 | $85,686 | $76,774 |
| High School Graduate | $37,398 | $44,722 | $36,864 |
| Less Than 9th Grade | $2,499 | $0 | $0 |
| Overall | $58,687 | $67,635 | $52,174 |
| Some College | $57,577 | $66,932 | $46,053 |
$58,687
Average Earnings
$67,635
Average Male
$52,174
Average Female
Only English
Spanish
Other Indo-European Languages
Asian and Pacific Island Languages
Other Languages
97.86% of Waterloo residents speak only English, while 2.14% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 0.92% of the population.
rate
Name | Total | In Poverty | Poverty Rate |
|---|---|---|---|
| White | 10,380 | 474 | 4.57% |
| Black | 79 | 55 | 69.62% |
| Asian | 139 | 14 | 10.07% |
5.03%
Overall Poverty Rate
2.71%
Male Poverty Rate
7.34%
Female Poverty Rate
The race most likely to be in poverty in Waterloo is Black, with 69.62% below the poverty level.
The race least likely to be in poverty in Waterloo is White, with 4.57% below the poverty level.
The poverty rate among those that worked full-time for the past 12 months was 0.47%. Among those working part-time, it was 6.25%, and for those that did not work, the poverty rate was 12.66%.
rate
Rate | Poverty |
|---|---|
| Less Than 9th Grade | 22.58% |
| High School | 6.96% |
| Bachelors or Greater | 2.73% |
| Some College | 2.33% |
rate
Rate | Poverty |
|---|---|
| Male Unemployed | 29.03% |
| Female Employed | 2.3% |
| Male Employed | 0% |
| Female Unemployed | 0% |
Households
Families
MarriedFamilies
NonFamilies
Name | Median | Mean |
|---|---|---|
| Families | $115,617 | $126,362 |
| Households | $88,019 | $104,304 |
| Married Families | $128,500 | $-999,999,999 |
| Non Families | $40,536 | $50,299 |
mean
median
Married
Widowed
Divorced
Separated
NeverMarried
53.9%
Overall Marriage Rate
54.4%
Male Marriage Rate
53.4%
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 45-54.
Married
Widowed
Divorced
Separated
NeverMarried
Second Gulf War
First Gulf War
Vietnam
Korea
World War II
781
Number of Veterans
696
Male Veterans
85
Female Veterans
War | Veterans |
|---|---|
| First Gulf War | 321 |
| Vietnam | 182 |
| Second Gulf War | 121 |
| Korea | 63 |
| World War II | 15 |
count
Age Group | Veterans |
|---|---|
| 35 to 54 | 244 |
| 55 to 64 | 195 |
| 75+ | 168 |
| 65 to 74 | 137 |
| 18 to 34 | 37 |
count
Name | Veterans | % of Total |
|---|---|---|
| White | 781 | 9.42% |
Less Than 9th Grade
High School Graduate
Some College
Bachelors or Greater
0.91%
Veteran Poverty Rate
20.75%
Veteran Disability Rate
LaborForceParticipation
65.8%
Labor Force Participation
63.9%
Employment Rate
3%
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
60.13%
Born in Waterloo
98.55%
Native Born
1.45%
Foreign Born
0.29%
Non Citizen
1.16%
Naturalized
98.55% of Waterloo residents were born in the United States, with 60.13% having been born in Illinois. 0.29% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Asia.
Year | Population | Growth | Change |
|---|---|---|---|
| 2029 | 11,422 | 47 | 0.41% |
| 2028 | 11,375 | 46 | 0.41% |
| 2027 | 11,329 | 46 | 0.41% |
| 2026 | 11,283 | 47 | 0.42% |
| 2025 | 11,236 | 46 | 0.41% |
| 2024 | 11,190 | 46 | 0.41% |
| 2023 | 11,144 | 26 | 0.23% |
| 2022 | 11,118 | 38 | 0.34% |
| 2021 | 11,080 | 75 | 0.68% |
| 2020 | 11,005 | 440 | 4.16% |
| 2019 | 10,565 | 117 | 1.12% |
| 2018 | 10,448 | 84 | 0.81% |
| 2017 | 10,364 | 120 | 1.17% |
| 2016 | 10,244 | 81 | 0.8% |
| 2015 | 10,163 | 66 | 0.65% |
| 2014 | 10,097 | -5 | -0.05% |
| 2013 | 10,102 | 41 | 0.41% |
| 2012 | 10,061 | 14 | 0.14% |
| 2011 | 10,047 | 77 | 0.77% |
| 2010 | 9,970 | 0 | 0% |
| 2000 | 7,614 | 2,542 | 50.12% |
| 1990 | 5,072 | 426 | 9.17% |
| 1980 | 4,646 | 100 | 2.2% |
| 1970 | 4,546 | 807 | 21.58% |
| 1960 | 3,739 | 918 | 32.54% |
| 1950 | 2,821 | -8,601 | -75.3% |