COUNTY · 2010 ACS
Knox County
Illinois · 52,919 residents · 716.385 sq mi
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Part of the Galesburg micropolitan area
The short version
Knox County has lower-than-average household income, with a median household income of $39,545. Population has declined 5% since 2000. 15% of adults hold a bachelor's degree or higher, below the national rate of 28%. Median home value is $80,600. Households here earn about 29% less than the Illinois median.
At a glance
Lower income
below the US median
US median: $52,703
Older
median age 42.0
US median: 37.2
Less educated
15% hold a bachelor's degree
US average: 28%
Stable housing
home values roughly flat, inflation adjusted
US median home: $225,659
Section 01
Population & growth
Population, 1990 – 2024
202449K
Age distribution, 2010
Under 55.2%(2,776)
5 to 95.9%(3,118)
10 to 145.8%(3,057)
15 to 196.8%(3,580)
20 to 246.9%(3,639)
25 to 3411.5%(6,091)
35 to 4411.5%(6,087)
45 to 5414.2%(7,525)
55 to 6413.8%(7,284)
65 to 749.2%(4,864)
75 to 846.3%(3,347)
85 and over2.9%(1,551)
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Section 02
Income & economy
$39,545
−12%inflation adjusted, since 2000
from $35,407 in 2000
US average: $52,703
1990 – 2024
Households earning $100K+
20.3%
+0.4 ptssince 2009
from 19.9% in 2009
US average: 33.3%
Workforce by industry, 2010
Information13.9%
Retail trade10.5%
Finance & insurance8.4%
Professional, scientific, technical7.6%
Wholesale trade5.1%
Other services3.9%
Transportation & warehousing3.4%
Public administration3.3%
Agriculture, forestry, fishing2.8%
Construction2.8%
Arts, entertainment, food2.2%
Education & health services0.8%
Manufacturing0%
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Section 03
Housing
$80,600
Unchangedinflation adjusted, since 2000
from $63,400 in 2000
US average: $225,659
1990 – 2024
2.0
−1%since 2009
from 2.1 in 2009
2009 – 2024
Our index: median home value divided by median household income. Lower is more affordable.
RELATED:See current rent listings in Knox County on RentDataNow
Section 04
Race & ethnicity
2000
White, non-Hispanic88.4%(49,355)
Black6.2%(3,472)
Hispanic / Latino3.4%(1,896)
Asian0.7%(382)
Other0%
2010
White, non-Hispanic85.3%(45,132)
Black7.1%(3,741)
Hispanic / Latino4.8%(2,558)
Asian0.6%(331)
Other1.6%(844)
No data for the years selected.
Section 04 · Origins
Detailed origins & ancestry
Hispanic origin
Mexican3.3%(1,724)
South American0.6%(334)
Colombian0.5%(255)
Puerto Rican0.5%(241)
Argentine0.1%(59)
Central American0.1%(50)
Cuban0.1%(46)
Guatemalan0.1%(32)
Ecuadorian0%(20)
Salvadoran0%(18)
Spaniard0%(10)
Ancestry
German23.1%(12,231)
Irish14.9%(7,869)
English11.7%(6,211)
Swedish11.6%(6,155)
American8%(4,242)
Dutch3.8%(1,999)
Italian3.3%(1,722)
French2.5%(1,339)
Scotch-Irish2%(1,037)
Scottish1.6%(837)
Polish1.3%(702)
Subsaharan African1.2%(627)
+ 32 more ancestry groups with data
Norwegian0.9%(492)
Welsh0.7%(359)
Danish0.5%(254)
Czech0.4%(202)
British0.4%(198)
Russian0.3%(153)
Belgian0.3%(141)
West Indian0.2%(127)
Swiss0.2%(119)
Austrian0.2%(118)
Greek0.2%(113)
French Canadian0.2%(95)
Portuguese0.2%(89)
Ukrainian0.2%(81)
Hungarian0.1%(71)
Arab0.1%(62)
Croatian0.1%(55)
Finnish0.1%(52)
Lithuanian0.1%(48)
Romanian0.1%(36)
Nigerian0.1%(27)
Iraqi0%(22)
Jamaican0%(22)
Lebanese0%(20)
Slovak0%(20)
Canadian0%(16)
Armenian0%(15)
Israeli0%(14)
Australian0%(9)
Bulgarian0%(9)
Iranian0%(6)
Serbian0%(3)
Section 05
Education
High school or higher
85.2%
+3.4 ptssince 2000
from 81.8% in 2000
US average: 84.9%
Section 06
Commute & transportation
Section 07
Work & employment
Section 08
People & community
Marital status (2024)
Men 15+
Never married41.1%(8,526)
Married43.6%(9,054)
Widowed4.2%(868)
Divorced11.1%(2,302)
Women 15+
Never married29.1%(5,853)
Married45.1%(9,072)
Widowed12%(2,415)
Divorced13.8%(2,769)
SHARE WITHIN EACH SEX · POPULATION 15 AND OVER · 2024
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Compare Knox County to nearby counties
KNOX COUNTY VS
Warren County
Income$67,385+70%
Home value$105,000+30%
Population16,222−66%
SEE FULL COMPARISON →
KNOX COUNTY VS
Stark County
Income$62,878+59%
Home value$104,500+30%
Population5,319−89%
SEE FULL COMPARISON →
KNOX COUNTY VS
Peoria County
Income$65,108+65%
Home value$158,500+97%
Population178,553+274%
SEE FULL COMPARISON →
KNOX COUNTY VS
Henry County
Income$71,911+82%
Home value$151,600+88%
Population48,095+1%
SEE FULL COMPARISON →
Frequently asked
How many people live in Knox County, Illinois?
Knox County, Illinois has about 52,919 residents according to the 2010 American Community Survey.
What is the median household income in Knox County, Illinois?
The typical household in Knox County, Illinois earns about $39,545 a year. Half of households make more than that, and half make less.
Is Knox County, Illinois expensive?
In Knox County, Illinois, the median home is worth about $80,600, and the typical rent is about $553 a month.
How educated are people in Knox County, Illinois?
About 15.2% of adults age 25 and over in Knox County, Illinois hold a bachelor's degree or higher.
What is the poverty rate in Knox County, Illinois?
About 15.5% of people in Knox County, Illinois live below the federal poverty line.
Has Knox County, Illinois grown since 1990?
Yes, Knox County, Illinois has shrunk since 1990. The population has lost about 3,474 residents, a change of about -6 percent over that period.
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16 census tracts
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ZIP 61401ZIP 61448ZIP 61410ZIP 61402ZIP 61428ZIP 61467ZIP 61488ZIP 61489ZIP 61436ZIP 61572ZIP 61430ZIP 61414ZIP 61458ZIP 61472ZIP 61485ZIP 61439ZIP 61474Up the hierarchy
All counties in IllinoisDATA: US CENSUS BUREAU ACS 5-YEAR + DECENNIAL CENSUS · UPDATED 2024