CITY
Quincy
Illinois · 38,918 residents (2025 est.) · 15.767 sq mi
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Part of the Quincy micropolitan area
Notable rankings
#151Shortest commutesof 6,82613.6The short version
Quincy has notably lower household income than the US average, with a median household income of $56,480. Population has declined 3% since 2000. Median home value has more than doubled since 2000, reaching $153,200. Households here earn about 32% less than the Illinois median.
At a glance
Lower income
below the US median
US median: $82,259
Mid-age
median age 39.7
US median: 38.9
Less educated
28% hold a bachelor's degree
US average: 36%
Stable housing
home values roughly flat, inflation adjusted
US median home: $376,019
Section 01
Population & growth
PEP 2025 EST:38,918 residents (Census Bureau Vintage 2025, released March 2026)
Population, 1990 – 2024
202439K
Age distribution, 2024
Under 55.6%(2,180)
5 to 96.1%(2,399)
10 to 146.1%(2,395)
15 to 196.5%(2,555)
20 to 246.7%(2,603)
25 to 3413.4%(5,234)
35 to 4412.6%(4,910)
45 to 5410.7%(4,186)
55 to 6412.1%(4,719)
65 to 7410.8%(4,223)
75 to 846.2%(2,420)
85 and over3.3%(1,285)
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Section 02
Income & economy
$56,480
Unchangedinflation adjusted, since 2000
from $30,956 in 2000
US average: $82,259
1990 – 2024
Households earning $100K+
38.5%
+19.3 ptssince 2009
from 19.2% in 2009
US average: 53.3%
Workforce by industry, 2024
Retail trade15.2%
Information13.4%
Other services6.6%
Public administration6%
Transportation & warehousing4.3%
Finance & insurance3.7%
Professional, scientific, technical3.4%
Wholesale trade3.3%
Arts, entertainment, food1.3%
Agriculture, forestry, fishing1.2%
Construction1%
Manufacturing0.3%
Education & health services0.3%
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Section 03
Housing
$153,200
+22%inflation adjusted, since 2000
from $68,900 in 2000
US average: $376,019
1990 – 2024
2.7
+15%since 2009
from 2.4 in 2009
2009 – 2024
Our index: median home value divided by median household income. Lower is more affordable.
51
Our index, 0 to 100. Higher means faster recent growth in incomes, home values, and college degrees.
RELATED:See current rent listings in Quincy on RentDataNow
Section 04
Race & ethnicity
2000
White, non-Hispanic92.5%(37,332)
Black4.6%(1,862)
Hispanic / Latino0.9%(381)
Asian0.5%(213)
Other0%
2024
White, non-Hispanic86%(33,631)
Black4.2%(1,644)
Hispanic / Latino2.5%(969)
Asian1%(404)
Other6.3%(2,461)
32
+57%since 2009
from 20 in 2009
2009 – 2024
Our index, 0 to 100. Higher means a more even mix of racial and ethnic groups.
Section 04 · Origins
Detailed origins & ancestry
Hispanic origin
Mexican2%(776)
South American0.1%(45)
Puerto Rican0.1%(39)
Cuban0.1%(39)
Colombian0.1%(32)
Central American0%(14)
Honduran0%(14)
Venezuelan0%(13)
Asian origin
Filipino0.5%(190)
Asian Indian0.2%(79)
Korean0.1%(39)
Chinese0.1%(31)
Indonesian0%(16)
Japanese0%(7)
Vietnamese0%(6)
Laotian0%(5)
Pacific Islander origin
Native Hawaiian0%(9)
Ancestry
German32.3%(12,618)
Irish10%(3,910)
English9.9%(3,863)
American4.9%(1,898)
Italian2.3%(908)
Scottish2.1%(827)
Dutch1.4%(552)
French1.2%(481)
Polish1.2%(466)
Swedish1.1%(427)
Subsaharan African0.8%(323)
Scotch-Irish0.8%(310)
+ 29 more ancestry groups with data
Norwegian0.5%(201)
West Indian0.5%(180)
Arab0.4%(137)
Welsh0.3%(136)
Danish0.3%(118)
Lithuanian0.2%(97)
British0.2%(93)
Greek0.2%(87)
Egyptian0.2%(80)
Nigerian0.2%(71)
Belgian0.2%(69)
Slovak0.2%(66)
Serbian0.1%(54)
Swiss0.1%(52)
Austrian0.1%(50)
Finnish0.1%(43)
Ukrainian0.1%(37)
Jordanian0.1%(35)
Brazilian0.1%(33)
Hungarian0.1%(29)
Czech0.1%(27)
Lebanese0.1%(22)
Portuguese0%(19)
Romanian0%(19)
Russian0%(10)
Iranian0%(6)
Canadian0%(5)
Jamaican0%(4)
Haitian0%(3)
Section 05
Education
High school or higher
92.5%
+9.9 ptssince 2000
from 82.7% in 2000
US average: 89.6%
Section 06
Commute & transportation
Section 07
Work & employment
Section 08
People & community
Marital status
Men 15+
Never married37.9%(5,966)
Married45.6%(7,179)
Widowed3.5%(553)
Divorced13%(2,055)
Women 15+
Never married31.2%(5,116)
Married42%(6,874)
Widowed10.1%(1,651)
Divorced16.7%(2,741)
SHARE WITHIN EACH SEX · POPULATION 15 AND OVER · 2024
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Frequently asked
How many people live in Quincy, Illinois?
Quincy, Illinois has about 39,109 residents according to the 2024 American Community Survey.
What is the median household income in Quincy, Illinois?
The typical household in Quincy, Illinois earns about $56,480 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 $153,200, and the typical rent is about $837 a month.
How educated are people in Quincy, Illinois?
About 27.8% 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 16.7% of people in Quincy, Illinois live below the federal poverty line.
Has Quincy, Illinois grown since 1990?
Yes, Quincy, Illinois has shrunk since 1990. The population has lost about 572 residents, a change of about -1 percent over that period.
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IllinoisDATA: US CENSUS BUREAU ACS 5-YEAR + DECENNIAL CENSUS · UPDATED 2024