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CITY · 2000 CENSUS

Waterloo

Illinois · 7,614 residents · 8.234 sq mi
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The short version

Waterloo is wealthier than most US places, with a median household income of $46,938. The city has grown rapidly, with population up 50% since 1990. Median home value has more than doubled since 1990, reaching $118,800. Poverty is rare here, at 3.8% of residents.

At a glance
Wealthier
above the US median
US median: $42,589
Mid-age
median age 36.4
US median: 35.2
Less educated
19% hold a bachelor's degree
US average: 24%
Less affordable
home values up 40%, inflation adjusted
US median home: $120,530
Section 01

Population & growth

Total population
7,614
+50%since 1990
from 5,072 in 1990
1990 – 2025
Population density
925 / sq mi
+50%since 1990
from 616 / sq mi in 1990
US average: 242
Median age
36.4
+2%since 1990
from 35.7 in 1990
US average: 35.2
Population, 1990 – 2024
4K6K8K10K12K1990201020202024Waterloo
202411K
1990201020202024
Section 02

Income & economy

Median household income
$46,938
+19%inflation adjusted, since 1990
from $30,057 in 1990
US average: $42,589
1990 – 2024
Per capita income
$21,081
+54%since 1990
from $13,675 in 1990
US average: $21,522
Poverty rate
3.8%
−0.7 ptssince 1990
from 4.4% in 1990
US average: 12.4%
Section 03

Housing

Median home value
$118,800
+40%inflation adjusted, since 1990
from $64,500 in 1990
US average: $120,530
1990 – 2024
Median gross rent
$543
+21%inflation adjusted, since 1990
from $340 in 1990
US average: $602
Owner-occupied
71.1%
+0.1 ptssince 1990
from 71.0% in 1990
28.9% rent
Afford Score
2.5
+18%since 1990
from 2.1 in 1990
1990 – 2024
RELATED:See current rent listings in Waterloo on RentDataNow
Section 04

Race & ethnicity

1990
White, non-Hispanic99.6%(5,054)
Black0.1%(4)
Hispanic / Latino0.6%(32)
Asian0%(0)
Diversity Score2.4%(123)
2000
White, non-Hispanic98.4%(7,495)
Black0%(0)
Hispanic / Latino0.7%(52)
Asian0.3%(24)
Diversity Score2.5%(190)
Diversity Score
2
+2%since 1990
from 2 in 1990
1990 – 2024
Section 05

Education

Bachelor's degree or higher
19.3%
+6.1 ptssince 1990
from 13.3% in 1990
US average: 24.4%
High school or higher
85.4%
+13.8 ptssince 1990
from 71.6% in 1990
US average: 80.3%
Graduate degree
6.2%
+3.4 ptssince 1990
from 2.8% in 1990
US average: 8.8%
Section 06

Commute & transportation

Average commute
21.1 min
−22%since 1990
from 27.1 min in 1990
US average: 17.6
Section 07

Work & employment

No data for the years selected.

Section 08

People & community

No data for the years selected.

Drill deeper

Places similar to Waterloo

Lighthouse Point
Pop 10,756
Gateway
Pop 11,176
Laurel
Pop 11,741
Pike Creek Valley
Pop 12,431
Places similar to Waterloo
Head to head

Compare Waterloo to nearby cities

WATERLOO VS
Columbia
Income$107,606+129%
Home value$293,000+147%
Population10,865−2%
SEE FULL COMPARISON →
WATERLOO VS
Oakville
Income$106,362+127%
Home value$318,600+168%
Population35,333+217%
SEE FULL COMPARISON →
WATERLOO VS
Arnold
Income$78,370+67%
Home value$220,000+85%
Population20,994+89%
SEE FULL COMPARISON →
WATERLOO VS
Mehlville
Income$67,071+43%
Home value$218,400+84%
Population29,805+168%
SEE FULL COMPARISON →
Frequently asked

How many people live in Waterloo, Illinois?

Waterloo, Illinois has about 7,614 residents according to the 2000 Census.

What is the median household income in Waterloo, Illinois?

The typical household in Waterloo, Illinois earns about $46,938 a year. Half of households make more than that, and half make less.

Is Waterloo, Illinois expensive?

In Waterloo, Illinois, the median home is worth about $118,800, and the typical rent is about $543 a month.

How educated are people in Waterloo, Illinois?

About 19.3% of adults age 25 and over in Waterloo, Illinois hold a bachelor's degree or higher.

What is the poverty rate in Waterloo, Illinois?

About 3.8% of people in Waterloo, Illinois live below the federal poverty line.

Has Waterloo, Illinois grown since 1990?

Yes, Waterloo, Illinois has grown since 1990. The population has added about 2,542 residents, a change of about 50 percent over that period.

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DATA: US CENSUS BUREAU ACS 5-YEAR + DECENNIAL CENSUS · UPDATED 2024

How we source and harmonize this data →