Waterloo, IL
Demographics And Statistics

We take you around Waterloo to find out what it's like to call it home.

Living in Waterloo, Illinois

Life in Waterloo research summary. HomeSnacks has been using Saturday Night Science to research the quality of life in Waterloo over the past nine years using Census, FBI, Zillow, and other primary data sources. Here's a snapshot of Waterloo based on the most recently available data.

11,129 Population
$327,507 Median home value
$98,711 Median income
99 Cost of living -1% vs US
$886 Median rent
2.3% Unemployment
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Waterloo SnackAbility

6
Overall SnackAbility
Jobs 8.5/10
Housing 7/10
Affordability 8.5/10
Diversity 4/10
SafetyN/A
Amenities 8/10
Education 8.5/10
Commute 6/10

Cost of living in Waterloo summary. We use data on the cost of living to determine how expensive it is to live in Waterloo. Real estate prices drive most of the variance in cost of living around Illinois. Key points include:

  • The cost of living in Waterloo is 99 with 100 being average.

  • The cost of living in Waterloo is 1.0x lower than the national average.

  • The median home value in Waterloo is $327,507.

  • The median income in Waterloo is $98,711.

99
Waterloo's Overall Cost Of Living
1.0x
Lower Than The National Average
Waterloo
US

Cost Of Living In Waterloo Comparison Table

Living Expense Waterloo Illinois National Average
Overall 99 98 100
Services 96 99 100
Groceries 99 99 100
Health 101 96 100
Housing 100 101 100
Transportation 97 99 100
Utilities 91 101 100
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Source: Cost of living index, normalized to US average = 100

Waterloo, IL Weather

  • The average high in Waterloo is 65.7° and the average low is 46.3°.

  • There are 65.2 days of precipitation each year.

  • Expect an average of 42.9 inches of precipitation each year with 11.7 inches of snow.

StatWaterloo
Average Annual High65.7
Average Annual Low46.3
Annual Precipitation Days65.2
Average Annual Precipitation42.9
Average Annual Snowfall11.7
65.7°
Average High
65.2
Days of Rain

Source: NOAA climate normals (30-year)

Waterloo, IL Photos

Porta
Source: Wikipedia | GFDL
Greaterstl
Source: Public Domain

Rankings & Articles For Waterloo

Locations Around Waterloo

Map Of Waterloo, IL

Best Places Around Waterloo

1

Shiloh, IL
Population 14,572

$313,003-4% vs Waterloo
2

Swansea, IL
Population 14,710

$263,376-20% vs Waterloo
3

Columbia, IL
Population 11,127

$342,741+5% vs Waterloo
4

Fairview Heights, IL
Population 16,745

$191,787-41% vs Waterloo
5

Belleville, IL
Population 41,370

$156,535-52% vs Waterloo
6

Oakville, MO
Population 35,333

$360,341+10% vs Waterloo
7

Concord, MO
Population 18,368

$332,058+1% vs Waterloo
8

Sunset Hills, MO
Population 9,112

$610,688+86% vs Waterloo
9

Affton, MO
Population 19,052

$240,347-27% vs Waterloo
10

Shrewsbury, MO
Population 6,316

$285,843-13% vs Waterloo

Waterloo Demographics And Statistics

Population over time in Waterloo

The current population in Waterloo is 11,129. The population has increased 15.4% from 2010.

Year Population % Change
2024 11,129 0.7%
2023 11,055 0.4%
2022 11,012 1.0%
2021 10,906 4.7%
2020 10,417 0.5%
2019 10,367 1.0%
2018 10,268 0.6%
2017 10,202 0.0%
2016 10,197 0.5%
2015 10,151 0.5%
2014 10,102 0.9%
2013 10,015 1.9%
2012 9,826 0.8%
2011 9,749 1.1%
2010 9,640 -

Race / Ethnicity in Waterloo

White 94.1% (10,470)
African American 1.0% (115)
American Indian 0.1% (15)
Asian 1.7% (189)
Hawaiian 0.0% (0)
Other 0.0% (0)
Two Or More 1.3% (140)
Hispanic 1.8% (200)
See the full breakdown

Waterloo is:

  • 94.1% White with 10,470 White residents.

  • 1.0% African American with 115 African American residents.

  • 0.1% American Indian with 15 American Indian residents.

  • 1.7% Asian with 189 Asian residents.

  • 0.0% Hawaiian with 0 Hawaiian residents.

  • 0.0% Other with 0 Other residents.

  • 1.3% Two Or More with 140 Two Or More residents.

  • 1.8% Hispanic with 200 Hispanic residents.

Race Waterloo IL USA
White 94.1% 58.1% 57.4%
African American 1.0% 13.3% 11.9%
American Indian 0.1% 0.1% 0.5%
Asian 1.7% 5.9% 5.9%
Hawaiian 0.0% 0.0% 0.2%
Other 0.0% 0.4% 0.6%
Two Or More 1.3% 3.4% 4.3%
Hispanic 1.8% 18.8% 19.3%

Gender in Waterloo

Female 51.2% (5,693)
Male 48.8% (5,435)
See the full breakdown
  • Waterloo is 51.2% female with 5,693 female residents.

  • Waterloo is 48.8% male with 5,435 male residents.

Gender Waterloo IL USA
Female 51.2% 50.6% 50.5%
Male 48.8% 49.4% 49.5%

Highest level of educational attainment in Waterloo for adults over 25

< 9th Grade 0.0% (0)
9-12th Grade 3.0% (333)
High School / GED 23.0% (2,559)
Some College 27.0% (3,004)
Associate's Degree 9.0% (1,001)
Bachelor's Degree 24.0% (2,670)
Master's Degree 9.0% (1,001)
Professional Degree 3.0% (333)
Doctorate Degree 2.0% (222)
See the full breakdown
  • 0.0% of adults in Waterloo completed < 9th grade.

  • 3.0% of adults in Waterloo completed 9-12th grade.

  • 23.0% of adults in Waterloo completed high school / ged.

  • 27.0% of adults in Waterloo completed some college.

  • 9.0% of adults in Waterloo completed associate's degree.

  • 24.0% of adults in Waterloo completed bachelor's degree.

  • 9.0% of adults in Waterloo completed master's degree.

  • 3.0% of adults in Waterloo completed professional degree.

  • 2.0% of adults in Waterloo completed doctorate degree.

Education Waterloo IL USA
< 9th Grade 0.0% 5.0% 4.0%
9-12th Grade 3.0% 5.0% 6.0%
High School / GED 23.0% 25.0% 26.0%
Some College 27.0% 19.0% 19.0%
Associate's Degree 9.0% 8.0% 9.0%
Bachelor's Degree 24.0% 23.0% 22.0%
Master's Degree 9.0% 11.0% 10.0%
Professional Degree 3.0% 2.0% 2.0%
Doctorate Degree 2.0% 2.0% 2.0%

Household Income For Waterloo, Illinois

Less than $10,000 2.5% (27,754)
$10,000 to $14,999 3.9% (43,613)
$15,000 to $24,999 5.2% (58,234)
$25,000 to $34,999 5.1% (56,995)
$35,000 to $49,999 7.1% (79,545)
$50,000 to $74,999 17.9% (198,988)
$75,000 to $99,999 8.6% (95,405)
$100,000 to $149,999 22.2% (246,567)
$150,000 to $199,999 15.7% (174,703)
$200,000 or more 11.8% (131,089)
See the full breakdown
  • 2.5% of households in Waterloo earn Less than $10,000.

  • 3.9% of households in Waterloo earn $10,000 to $14,999.

  • 5.2% of households in Waterloo earn $15,000 to $24,999.

  • 5.1% of households in Waterloo earn $25,000 to $34,999.

  • 7.1% of households in Waterloo earn $35,000 to $49,999.

  • 17.9% of households in Waterloo earn $50,000 to $74,999.

  • 8.6% of households in Waterloo earn $75,000 to $99,999.

  • 22.2% of households in Waterloo earn $100,000 to $149,999.

  • 15.7% of households in Waterloo earn $150,000 to $199,999.

  • 11.8% of households in Waterloo earn $200,000 or more.

Income Waterloo IL USA
Less than $10,000 2.5% 5.4% 5.0%
$10,000 to $14,999 3.9% 3.2% 3.4%
$15,000 to $24,999 5.2% 5.9% 6.3%
$25,000 to $34,999 5.1% 6.3% 6.6%
$35,000 to $49,999 7.1% 9.7% 10.1%
$50,000 to $74,999 17.9% 14.8% 15.5%
$75,000 to $99,999 8.6% 12.6% 12.6%
$100,000 to $149,999 22.2% 18.0% 17.5%
$150,000 to $199,999 15.7% 10.1% 9.6%
$200,000 or more 11.8% 13.8% 13.4%

Source: U.S. Census ACS 5-year estimates (2024)