Waterloo, IL Profile: Facts & Data

Waterloo, Illinois - Basic Facts

The City of Waterloo had a population of 11,198 as of July 1, 2024.

The primary coordinate point for Waterloo is located at latitude 38.3359 and longitude -90.1498 in Monroe County. The formal boundaries for the City of Waterloo encompass a land area of 8.13 sq. miles and a water area of 0.14 sq. miles. Monroe County is in the Central time zone (GMT -6).

The City of Waterloo has a C1 Census Class Code which indicates an active incorporated place that does not serve as a county subdivision equivalent. It also has a Functional Status Code of "A" which identifies an active government providing primary general-purpose functions.

The City of Waterloo is located within Precinct 31 Election Precinct, a minor civil division (MCD) of Monroe County.

Jump to... (On This Page!)

Waterloo, IL Data & Demographics (As of July 1, 2024)

POPULATION
Total Population	11,198 (100%)
Population in Households	10,989 (98.1%)
Population in Families	8,979 (80.2%)
Population in Group Quarters¹	209 ( 1.9%)
Population Density	1,360
Diversity Index²	16


INCOME
Median Household Income	$94,423
Average Household Income	$109,801
% of Income for Mortgage⁴	17%
Per Capita Income	$45,255
Wealth Index⁵	105
Socioeconomic Status Index⁶	Moderate (58.7)

HOUSING
Total HU (Housing Units)	4,830 (100%)
Owner Occupied HU	3,607 (74.7%)
Renter Occupied HU	1,006 (20.8%)
Vacant Housing Units	217 ( 4.5%)
Median Home Value	$251,047
Average Home Value	$284,024
Housing Affordability Index³	135

HOUSEHOLDS
Total Households	4,613
Average Household Size	2.38
Family Households	3,083
Average Family Size	3.00

HOUSING

Total HU (Housing Units)

4,830 (100%)

Owner Occupied HU

3,607 (74.7%)

Renter Occupied HU

1,006 (20.8%)

Vacant Housing Units

217 ( 4.5%)

Median Home Value

$251,047

Average Home Value

$284,024

Housing Affordability Index³

135

HOUSEHOLDS

Total Households

4,613

Average Household Size

2.38

Family Households

3,083

Average Family Size

3.00

NOTES

Group Quarters - a place where people live or stay in a group living arrangement. Includes college residents halls, nursing facilities, military barracks, and correctional facilities.
The Diversity Index is a scale of 0 to 100 that represents the likelihood that two persons, chosen at random from the same area, belong to different races or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.
The Housing Affordability Index base is 100 and represents a balance point where a resident with a median household income can normally qualify to purchase a median price home. Values above 100 indicate increased affordability, while values below 100 indicate decreased affordability.
The % of Income for Mortgage quantifies the percentage of median household income dedicated to mortgage payments on a home priced at the median value (assuming a 30-year mortgage and a 20% down payment).
The Wealth Index is based on a number of indicators of affluence including average household income and average net worth, but it also includes the value of material possessions and resources. It represents the wealth of the area relative to the national level. Values above or below 100 represent above-average wealth or below-average wealth compared to the national level.
The Socioeconomic Index ranges from zero (lowest relative status) to 100 (highest relative status). This measure quantifies disparities in social position of an area's inhabitants and is built from a broad range of demographic, housing, and socioeconomic inputs. More information on this measure can be found in Esri's SEI tutorial.

GROWTH RATE / YEAR	2020-2024	2024-2029
Population	0.39%	0.25%
Households	0.76%	0.67%
Families		0.75%
Median Household Income		2.10%
Per Capita Income		2.98%
Owner Occupied HU		1.48%

GROWTH RATE / YEAR

2020-2024

2024-2029

Population

0.39%

0.25%

Households

0.76%

0.67%

Families

0.75%

Median Household Income

2.10%

Per Capita Income

2.98%

Owner Occupied HU

1.48%

Waterloo, IL - Peer Comparisons by Rank and Percentile

The table below compares Waterloo to the other 1,462 incorporated cities, towns and CDPs in Illinois by rank and percentile using July 1, 2024 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

Variable Description	Rank	Percentile
Total Population	# 204	86th
Population Density	# 481	67th
Median Household Income	# 316	78th
Housing Affordability Index	# 719	49th
Per Capita Income	# 407	72nd
Diversity Index	# 982	33rd

Variable Description

Rank

Percentile

Total Population

# 204

86th

Population Density

# 481

67th

Median Household Income

# 316

78th

Housing Affordability Index

# 719

49th

Per Capita Income

# 407

72nd

Diversity Index

# 982

33rd

Illinois Census Data Comparison Tool

Waterloo, IL Profile: Facts & Data

Waterloo, Illinois - Basic Facts

Waterloo, IL Data & Demographics (As of July 1, 2024)

POPULATION

INCOME

HOUSING

HOUSEHOLDS

GROWTH RATE / YEAR

Waterloo, IL - Peer Comparisons by Rank and Percentile

Waterloo, IL - Most Popular Things to Do

Use HTL Address Research for a Illinois Address and get...

Quick & Easy Ways to...

Illinois Census Data Comparison Tool

Monroe County