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CITY · 2000 CENSUS

Quincy

Illinois · 40,366 residents · 15.767 sq mi
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The short version

Quincy has notably lower household income than the US average, with a median household income of $30,956. Population has held roughly steady since 1990. Median home value has risen by half since 1990, reaching $68,900. Households here earn about 34% less than the Illinois median.

At a glance
Lower income
below the US median
US median: $42,589
Older
median age 38.4
US median: 35.2
Less educated
19% hold a bachelor's degree
US average: 24%
Less affordable
home values up 26%, inflation adjusted
US median home: $120,530
Section 01

Population & growth

Total population
40,366
+2%since 1990
from 39,681 in 1990
1990 – 2025
Population density
2,560 / sq mi
+2%since 1990
from 2,517 / sq mi in 1990
US average: 242
Median age
38.4
+6%since 1990
from 36.1 in 1990
US average: 35.2
Population, 1990 – 2024
39K39K40K40K41K1990201020202024Quincy
202439K
1990201020202024
Section 02

Income & economy

Median household income
$30,956
+10%inflation adjusted, since 1990
from $21,325 in 1990
US average: $42,589
1990 – 2024
Per capita income
$17,479
+49%since 1990
from $11,708 in 1990
US average: $21,522
Poverty rate
12.2%
−2.9 ptssince 1990
from 15.0% in 1990
US average: 12.4%
Section 03

Housing

Median home value
$68,900
+26%inflation adjusted, since 1990
from $41,600 in 1990
US average: $120,530
1990 – 2024
Median gross rent
$410
+13%inflation adjusted, since 1990
from $276 in 1990
US average: $602
Owner-occupied
66.4%
+2.4 ptssince 1990
from 64.1% in 1990
33.6% rent
Afford Score
2.2
+14%since 1990
from 2.0 in 1990
1990 – 2024
RELATED:See current rent listings in Quincy on RentDataNow
Section 04

Race & ethnicity

1990
White, non-Hispanic95%(37,703)
Black4.2%(1,662)
Hispanic / Latino0.2%(70)
Asian0.4%(164)
Diversity Score12.3%(4,891)
2000
White, non-Hispanic92.5%(37,332)
Black4.6%(1,862)
Hispanic / Latino0.9%(381)
Asian0.5%(213)
Diversity Score14.7%(5,920)
Diversity Score
15
+19%since 1990
from 12 in 1990
1990 – 2024
Section 05

Education

Bachelor's degree or higher
19.3%
+4.8 ptssince 1990
from 14.5% in 1990
US average: 24.4%
High school or higher
82.7%
+9.1 ptssince 1990
from 73.6% in 1990
US average: 80.3%
Graduate degree
6.8%
+2.0 ptssince 1990
from 4.8% in 1990
US average: 8.8%
Section 06

Commute & transportation

Average commute
9.8 min
−20%since 1990
from 12.2 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 Quincy

Leesburg
Pop 38,905
Biscayne Gardens
Pop 35,472
West Little River
Pop 33,890
North Fort Myers
Pop 44,993
Places similar to Quincy
Head to head

Compare Quincy to nearby cities

QUINCY VS
Hannibal
Income$53,721+74%
Home value$127,700+85%
Population16,804−57%
SEE FULL COMPARISON →
QUINCY VS
Keokuk
Income$52,711+70%
Home value$104,300+51%
Population9,510−76%
SEE FULL COMPARISON →
QUINCY VS
Fort Madison
Income$50,705+64%
Home value$94,200+37%
Population9,935−74%
SEE FULL COMPARISON →
QUINCY VS
Macomb
Income$44,411+43%
Home value$103,300+50%
Population14,530−63%
SEE FULL COMPARISON →
Frequently asked

How many people live in Quincy, Illinois?

Quincy, Illinois has about 40,366 residents according to the 2000 Census.

What is the median household income in Quincy, Illinois?

The typical household in Quincy, Illinois earns about $30,956 a year. Half of households make more than that, and half make less.

Is Quincy, Illinois expensive?

In Quincy, Illinois, the median home is worth about $68,900, and the typical rent is about $410 a month.

How educated are people in Quincy, Illinois?

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

What is the poverty rate in Quincy, Illinois?

About 12.2% of people in Quincy, Illinois live below the federal poverty line.

Has Quincy, Illinois grown since 1990?

Yes, Quincy, Illinois has grown since 1990. The population has added about 685 residents, a change of about 2 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 →