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QuickFacts

Knox County, Illinois; Marion County, Illinois; Alexander County, Illinois; Peoria County, Illinois; McHenry County, Illinois

QuickFacts provides statistics for all states and counties, and for cities and towns with a population of 5,000 or more.

Table

Knox County, Illinois
Marion County, Illinois
Alexander County, Illinois
Peoria County, Illinois
McHenry County, Illinois
Female persons, percent
49.5%
51.1%
51.4%
51.5%
50.2%
People
Population
Population estimates, July 1, 2019, (V2019) 49,699 37,205 5,761 179,179 307,774
Population estimates base, April 1, 2010, (V2019) 52,926 39,437 8,238 186,496 308,882
Population, percent change - April 1, 2010 (estimates base) to July 1, 2019, (V2019) -6.1% -5.7% -30.1% -3.9% -0.4%
Population, Census, April 1, 2010 52,919 39,437 8,238 186,494 308,760
Age and Sex
Persons under 5 years, percent
5.8%
6.4%
5.5%
6.9%
5.5%
Persons under 18 years, percent
19.9%
23.2%
22.2%
23.7%
23.2%
Persons 65 years and over, percent
21.9%
19.8%
23.1%
17.6%
15.2%
Female persons, percent
49.5%
51.1%
51.4%
51.5%
50.2%
Race and Hispanic Origin
White alone, percent
87.4%
92.7%
64.9%
73.5%
93.0%
Black or African American alone, percent(a)
8.3%
4.3%
31.8%
18.8%
1.8%
American Indian and Alaska Native alone, percent(a)
0.4%
0.4%
0.5%
0.4%
0.5%
Asian alone, percent(a)
1.0%
0.6%
0.3%
4.1%
3.0%
Native Hawaiian and Other Pacific Islander alone, percent(a)
Z
Z
0.2%
0.1%
0.1%
Two or More Races, percent
2.8%
2.0%
2.4%
3.1%
1.7%
Hispanic or Latino, percent(b)
6.0%
2.1%
1.9%
5.1%
13.9%
White alone, not Hispanic or Latino, percent
82.4%
90.9%
63.7%
69.4%
80.1%
Population Characteristics
Veterans, 2014-2018 3,585 2,718 439 10,485 15,224
Foreign born persons, percent, 2014-2018 3.2% 1.3% 0.7% 5.6% 9.6%
Housing
Housing units, July 1, 2019, (V2019) 23,870 18,280 3,962 83,631 119,173
Owner-occupied housing unit rate, 2014-2018 65.4% 73.4% 71.3% 65.1% 79.3%
Median value of owner-occupied housing units, 2014-2018 $83,100 $74,900 $53,500 $129,900 $219,600
Median selected monthly owner costs -with a mortgage, 2014-2018 $936 $929 $896 $1,224 $1,848
Median selected monthly owner costs -without a mortgage, 2014-2018 $422 $410 $380 $521 $761
Median gross rent, 2014-2018 $631 $619 $505 $778 $1,175
Building permits, 2019 16 13 0 71 565
Families & Living Arrangements
Households, 2014-2018 20,830 15,913 2,323 73,629 111,812
Persons per household, 2014-2018 2.25 2.35 2.76 2.43 2.74
Living in same house 1 year ago, percent of persons age 1 year+, 2014-2018 90.8% 86.9% 93.2% 85.5% 89.1%
Language other than English spoken at home, percent of persons age 5 years+, 2014-2018 5.5% 2.0% 0.7% 8.7% 14.4%
Computer and Internet Use
Households with a computer, percent, 2014-2018 80.5% 85.0% 56.3% 86.2% 94.2%
Households with a broadband Internet subscription, percent, 2014-2018 71.6% 75.7% 47.9% 75.6% 90.5%
Education
High school graduate or higher, percent of persons age 25 years+, 2014-2018 88.8% 88.8% 80.9% 90.4% 92.8%
Bachelor's degree or higher, percent of persons age 25 years+, 2014-2018 18.5% 15.0% 11.3% 30.4% 33.7%
Health
With a disability, under age 65 years, percent, 2014-2018 11.2% 12.5% 17.6% 7.9% 5.9%
Persons without health insurance, under age 65 years, percent
6.6%
6.8%
6.8%
6.9%
6.8%
Economy
In civilian labor force, total, percent of population age 16 years+, 2014-2018 53.6% 61.2% 47.0% 62.2% 70.3%
In civilian labor force, female, percent of population age 16 years+, 2014-2018 52.7% 57.6% 43.8% 58.7% 64.4%
Total accommodation and food services sales, 2012 ($1,000)(c) 76,344 38,162 2,164 383,480 435,670
Total health care and social assistance receipts/revenue, 2012 ($1,000)(c) 338,670 249,337 12,189 2,664,957 D
Total manufacturers shipments, 2012 ($1,000)(c) 321,417 710,584 D 6,197,509 5,163,195
Total merchant wholesaler sales, 2012 ($1,000)(c) 502,447 334,804 8,006 1,782,010 2,932,495
Total retail sales, 2012 ($1,000)(c) 791,255 353,692 24,207 2,576,723 3,664,358
Total retail sales per capita, 2012(c) $15,145 $9,094 $3,124 $13,761 $11,892
Transportation
Mean travel time to work (minutes), workers age 16 years+, 2014-2018 18.0 20.2 29.4 18.7 33.6
Income & Poverty
Median household income (in 2018 dollars), 2014-2018 $43,709 $46,102 $34,709 $54,770 $84,803
Per capita income in past 12 months (in 2018 dollars), 2014-2018 $24,681 $24,727 $19,065 $30,753 $38,047
Persons in poverty, percent
16.4%
19.5%
27.6%
16.6%
5.9%
Businesses
Businesses
Total employer establishments, 2018 1,009 862 95 4,394 8,009
Total employment, 2018 15,483 11,107 911 108,245 85,439
Total annual payroll, 2018 ($1,000) 484,495 416,461 32,406 6,291,718 3,947,964
Total employment, percent change, 2017-2018 -1.5% -2.2% -3.3% 3.5% 0.1%
Total nonemployer establishments, 2018 2,169 2,076 255 9,508 22,922
All firms, 2012 3,342 2,903 523 12,430 27,080
Men-owned firms, 2012 1,625 1,624 154 6,782 15,243
Women-owned firms, 2012 1,083 814 276 4,190 8,835
Minority-owned firms, 2012 300 128 202 2,200 2,906
Nonminority-owned firms, 2012 2,820 2,587 295 9,485 23,462
Veteran-owned firms, 2012 277 226 86 1,269 2,133
Nonveteran-owned firms, 2012 2,637 2,461 411 10,300 23,969
Geography
Geography
Population per square mile, 2010 73.9 68.9 35.0 301.2 511.9
Land area in square miles, 2010 716.40 572.36 235.51 619.21 603.17
FIPS Code 17095 17121 17003 17143 17111
Value Notes

Estimates are not comparable to other geographic levels due to methodology differences that may exist between different data sources.

Some estimates presented here come from sample data, and thus have sampling errors that may render some apparent differences between geographies statistically indistinguishable. Click the Quick Info icon to the left of each row in TABLE view to learn about sampling error.

The vintage year (e.g., V2019) refers to the final year of the series (2010 thru 2019). Different vintage years of estimates are not comparable.

Fact Notes Value Flags

QuickFacts data are derived from: Population Estimates, American Community Survey, Census of Population and Housing, Current Population Survey, Small Area Health Insurance Estimates, Small Area Income and Poverty Estimates, State and County Housing Unit Estimates, County Business Patterns, Nonemployer Statistics, Economic Census, Survey of Business Owners, Building Permits.

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