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QuickFacts

St. Clair County, Illinois; Knox County, Illinois; Alexander County, Illinois; Peoria County, Illinois; McHenry County, Illinois; Kane County, Illinois

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

Table

St. Clair County, Illinois
Knox County, Illinois
Alexander County, Illinois
Peoria County, Illinois
McHenry County, Illinois
Kane County, Illinois
Female persons, percent
51.8%
49.6%
51.6%
51.5%
50.2%
50.2%
People
Population
Population estimates, July 1, 2019, (V2019) NA NA NA NA NA NA
Population estimates, July 1, 2018, (V2018) 261,059 50,112 6,060 180,621 308,570 534,216
Population estimates base, April 1, 2010, (V2019) NA NA NA NA NA NA
Population estimates base, April 1, 2010, (V2018) 270,062 52,925 8,238 186,496 308,827 515,378
Population, percent change - April 1, 2010 (estimates base) to July 1, 2019, (V2019) NA NA NA NA NA NA
Population, percent change - April 1, 2010 (estimates base) to July 1, 2018, (V2018) -3.3% -5.3% -26.4% -3.2% -0.1% 3.7%
Population, Census, April 1, 2010 270,056 52,919 8,238 186,494 308,760 515,269
Age and Sex
Persons under 5 years, percent
6.3%
5.6%
6.5%
6.8%
5.5%
6.3%
Persons under 18 years, percent
23.4%
19.6%
23.1%
23.6%
23.5%
25.5%
Persons 65 years and over, percent
15.8%
21.6%
21.9%
17.1%
14.6%
13.7%
Female persons, percent
51.8%
49.6%
51.6%
51.5%
50.2%
50.2%
Race and Hispanic Origin
White alone, percent
64.9%
87.6%
64.4%
73.7%
93.1%
86.6%
Black or African American alone, percent(a)
30.6%
8.2%
32.3%
18.7%
1.7%
6.0%
American Indian and Alaska Native alone, percent(a)
0.4%
0.4%
0.5%
0.4%
0.5%
1.0%
Asian alone, percent(a)
1.5%
1.1%
0.3%
4.1%
3.0%
4.4%
Native Hawaiian and Other Pacific Islander alone, percent(a)
0.1%
Z
0.2%
0.1%
0.1%
0.1%
Two or More Races, percent
2.5%
2.7%
2.3%
3.0%
1.6%
2.0%
Hispanic or Latino, percent(b)
4.2%
5.9%
1.8%
4.9%
13.4%
32.2%
White alone, not Hispanic or Latino, percent
61.5%
82.7%
63.2%
69.7%
80.6%
56.8%
Population Characteristics
Veterans, 2014-2018 24,799 3,585 439 10,485 15,224 21,299
Foreign born persons, percent, 2014-2018 2.9% 3.2% 0.7% 5.6% 9.6% 17.7%
Housing
Housing units, July 1, 2018, (V2018) 120,596 23,890 3,977 83,638 118,814 189,472
Owner-occupied housing unit rate, 2014-2018 64.9% 65.4% 71.3% 65.1% 79.3% 73.5%
Median value of owner-occupied housing units, 2014-2018 $124,700 $83,100 $53,500 $129,900 $219,600 $232,000
Median selected monthly owner costs -with a mortgage, 2014-2018 $1,342 $936 $896 $1,224 $1,848 $1,872
Median selected monthly owner costs -without a mortgage, 2014-2018 $489 $422 $380 $521 $761 $748
Median gross rent, 2014-2018 $844 $631 $505 $778 $1,175 $1,133
Building permits, 2018 664 22 0 166 482 1,891
Families & Living Arrangements
Households, 2014-2018 103,063 20,830 2,323 73,629 111,812 178,050
Persons per household, 2014-2018 2.52 2.25 2.76 2.43 2.74 2.95
Living in same house 1 year ago, percent of persons age 1 year+, 2014-2018 87.8% 90.8% 93.2% 85.5% 89.1% 88.5%
Language other than English spoken at home, percent of persons age 5 years+, 2014-2018 5.1% 5.5% 0.7% 8.7% 14.4% 31.4%
Computer and Internet Use
Households with a computer, percent, 2014-2018 84.1% 80.5% 56.3% 86.2% 94.2% 92.6%
Households with a broadband Internet subscription, percent, 2014-2018 72.6% 71.6% 47.9% 75.6% 90.5% 86.9%
Education
High school graduate or higher, percent of persons age 25 years+, 2014-2018 90.8% 88.8% 80.9% 90.4% 92.8% 84.1%
Bachelor's degree or higher, percent of persons age 25 years+, 2014-2018 27.3% 18.5% 11.3% 30.4% 33.7% 33.1%
Health
With a disability, under age 65 years, percent, 2014-2018 9.1% 11.2% 17.6% 7.9% 5.9% 5.4%
Persons without health insurance, under age 65 years, percent
6.2%
5.8%
6.4%
6.3%
6.0%
9.1%
Economy
In civilian labor force, total, percent of population age 16 years+, 2014-2018 61.3% 53.6% 47.0% 62.2% 70.3% 68.9%
In civilian labor force, female, percent of population age 16 years+, 2014-2018 58.6% 52.7% 43.8% 58.7% 64.4% 62.4%
Total accommodation and food services sales, 2012 ($1,000)(c) 589,311 76,344 2,164 383,480 435,670 720,315
Total health care and social assistance receipts/revenue, 2012 ($1,000)(c) 1,363,794 338,670 12,189 2,664,957 D 2,406,944
Total manufacturers shipments, 2012 ($1,000)(c) 2,779,890 321,417 D 6,197,509 5,163,195 10,338,688
Total merchant wholesaler sales, 2012 ($1,000)(c) 2,643,797 502,447 8,006 1,782,010 2,932,495 9,628,766
Total retail sales, 2012 ($1,000)(c) 3,234,241 791,255 24,207 2,576,723 3,664,358 5,681,086
Total retail sales per capita, 2012(c) $12,030 $15,145 $3,124 $13,761 $11,892 $10,873
Transportation
Mean travel time to work (minutes), workers age 16 years+, 2014-2018 25.1 18.0 29.4 18.7 33.6 28.9
Income & Poverty
Median household income (in 2018 dollars), 2014-2018 $53,681 $43,709 $34,709 $54,770 $84,803 $76,912
Per capita income in past 12 months (in 2018 dollars), 2014-2018 $29,541 $24,681 $19,065 $30,753 $38,047 $34,924
Persons in poverty, percent
14.8%
16.4%
27.6%
16.6%
5.9%
8.6%
Businesses
Businesses
Total employer establishments, 2017 5,243 1,025 92 4,373 7,961 12,994
Total employment, 2017 76,350 15,719 942 104,602 85,331 187,382
Total annual payroll, 2017 ($1,000) 2,960,686 480,436 40,117 6,071,943 3,874,527 8,752,245
Total employment, percent change, 2016-2017 -2.2% -1.7% -10.0% 0.6% -2.8% 2.9%
Total nonemployer establishments, 2017 14,004 2,301 287 9,548 22,722 34,462
All firms, 2012 18,397 3,342 523 12,430 27,080 39,039
Men-owned firms, 2012 9,104 1,625 154 6,782 15,243 21,323
Women-owned firms, 2012 7,393 1,083 276 4,190 8,835 13,345
Minority-owned firms, 2012 5,427 300 202 2,200 2,906 9,737
Nonminority-owned firms, 2012 12,167 2,820 295 9,485 23,462 27,638
Veteran-owned firms, 2012 2,289 277 86 1,269 2,133 2,993
Nonveteran-owned firms, 2012 15,023 2,637 411 10,300 23,969 34,487
Geography
Geography
Population per square mile, 2010 410.6 73.9 35.0 301.2 511.9 990.8
Land area in square miles, 2010 657.76 716.40 235.51 619.21 603.17 520.06
FIPS Code 17163 17095 17003 17143 17111 17089
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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