end of header

QuickFacts

Knox County, Illinois; McHenry County, Illinois; Peoria County, Illinois; Clark County, Illinois; Alexander 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
McHenry County, Illinois
Peoria County, Illinois
Clark County, Illinois
Alexander County, Illinois
Female persons, percent
49.5%
50.2%
51.5%
50.5%
51.4%
People
Population
Population estimates, July 1, 2019, (V2019) 49,699 307,774 179,179 15,441 5,761
Population estimates base, April 1, 2010, (V2019) 52,926 308,882 186,496 16,335 8,238
Population, percent change - April 1, 2010 (estimates base) to July 1, 2019, (V2019) -6.1% -0.4% -3.9% -5.5% -30.1%
Population, Census, April 1, 2010 52,919 308,760 186,494 16,335 8,238
Age and Sex
Persons under 5 years, percent
5.8%
5.5%
6.9%
5.7%
5.5%
Persons under 18 years, percent
19.9%
23.2%
23.7%
22.3%
22.2%
Persons 65 years and over, percent
21.9%
15.2%
17.6%
20.2%
23.1%
Female persons, percent
49.5%
50.2%
51.5%
50.5%
51.4%
Race and Hispanic Origin
White alone, percent
87.4%
93.0%
73.5%
97.9%
64.9%
Black or African American alone, percent(a)
8.3%
1.8%
18.8%
0.5%
31.8%
American Indian and Alaska Native alone, percent(a)
0.4%
0.5%
0.4%
0.2%
0.5%
Asian alone, percent(a)
1.0%
3.0%
4.1%
0.4%
0.3%
Native Hawaiian and Other Pacific Islander alone, percent(a)
Z
0.1%
0.1%
Z
0.2%
Two or More Races, percent
2.8%
1.7%
3.1%
1.0%
2.4%
Hispanic or Latino, percent(b)
6.0%
13.9%
5.1%
1.5%
1.9%
White alone, not Hispanic or Latino, percent
82.4%
80.1%
69.4%
96.5%
63.7%
Population Characteristics
Veterans, 2014-2018 3,585 15,224 10,485 1,022 439
Foreign born persons, percent, 2014-2018 3.2% 9.6% 5.6% 1.1% 0.7%
Housing
Housing units, July 1, 2019, (V2019) 23,870 119,173 83,631 7,826 3,962
Owner-occupied housing unit rate, 2014-2018 65.4% 79.3% 65.1% 73.9% 71.3%
Median value of owner-occupied housing units, 2014-2018 $83,100 $219,600 $129,900 $87,800 $53,500
Median selected monthly owner costs -with a mortgage, 2014-2018 $936 $1,848 $1,224 $1,003 $896
Median selected monthly owner costs -without a mortgage, 2014-2018 $422 $761 $521 $487 $380
Median gross rent, 2014-2018 $631 $1,175 $778 $699 $505
Building permits, 2019 16 565 71 1 0
Families & Living Arrangements
Households, 2014-2018 20,830 111,812 73,629 6,774 2,323
Persons per household, 2014-2018 2.25 2.74 2.43 2.31 2.76
Living in same house 1 year ago, percent of persons age 1 year+, 2014-2018 90.8% 89.1% 85.5% 85.5% 93.2%
Language other than English spoken at home, percent of persons age 5 years+, 2014-2018 5.5% 14.4% 8.7% 1.5% 0.7%
Computer and Internet Use
Households with a computer, percent, 2014-2018 80.5% 94.2% 86.2% 84.8% 56.3%
Households with a broadband Internet subscription, percent, 2014-2018 71.6% 90.5% 75.6% 69.7% 47.9%
Education
High school graduate or higher, percent of persons age 25 years+, 2014-2018 88.8% 92.8% 90.4% 90.9% 80.9%
Bachelor's degree or higher, percent of persons age 25 years+, 2014-2018 18.5% 33.7% 30.4% 17.6% 11.3%
Health
With a disability, under age 65 years, percent, 2014-2018 11.2% 5.9% 7.9% 10.0% 17.6%
Persons without health insurance, under age 65 years, percent
6.6%
6.8%
6.9%
5.8%
6.8%
Economy
In civilian labor force, total, percent of population age 16 years+, 2014-2018 53.6% 70.3% 62.2% 66.0% 47.0%
In civilian labor force, female, percent of population age 16 years+, 2014-2018 52.7% 64.4% 58.7% 60.9% 43.8%
Total accommodation and food services sales, 2012 ($1,000)(c) 76,344 435,670 383,480 19,917 2,164
Total health care and social assistance receipts/revenue, 2012 ($1,000)(c) 338,670 D 2,664,957 20,405 12,189
Total manufacturers shipments, 2012 ($1,000)(c) 321,417 5,163,195 6,197,509 539,246 D
Total merchant wholesaler sales, 2012 ($1,000)(c) 502,447 2,932,495 1,782,010 257,886 8,006
Total retail sales, 2012 ($1,000)(c) 791,255 3,664,358 2,576,723 141,675 24,207
Total retail sales per capita, 2012(c) $15,145 $11,892 $13,761 $8,741 $3,124
Transportation
Mean travel time to work (minutes), workers age 16 years+, 2014-2018 18.0 33.6 18.7 23.1 29.4
Income & Poverty
Median household income (in 2018 dollars), 2014-2018 $43,709 $84,803 $54,770 $54,158 $34,709
Per capita income in past 12 months (in 2018 dollars), 2014-2018 $24,681 $38,047 $30,753 $29,887 $19,065
Persons in poverty, percent
16.4%
5.9%
16.6%
11.1%
27.6%
Businesses
Businesses
Total employer establishments, 2018 1,009 8,009 4,394 332 95
Total employment, 2018 15,483 85,439 108,245 3,851 911
Total annual payroll, 2018 ($1,000) 484,495 3,947,964 6,291,718 142,398 32,406
Total employment, percent change, 2017-2018 -1.5% 0.1% 3.5% 1.5% -3.3%
Total nonemployer establishments, 2018 2,169 22,922 9,508 1,003 255
All firms, 2012 3,342 27,080 12,430 1,187 523
Men-owned firms, 2012 1,625 15,243 6,782 502 154
Women-owned firms, 2012 1,083 8,835 4,190 408 276
Minority-owned firms, 2012 300 2,906 2,200 F 202
Nonminority-owned firms, 2012 2,820 23,462 9,485 1,146 295
Veteran-owned firms, 2012 277 2,133 1,269 178 86
Nonveteran-owned firms, 2012 2,637 23,969 10,300 918 411
Geography
Geography
Population per square mile, 2010 73.9 511.9 301.2 32.6 35.0
Land area in square miles, 2010 716.40 603.17 619.21 501.42 235.51
FIPS Code 17095 17111 17143 17023 17003
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.

X
  Is this page helpful?
Thumbs Up Image Yes    Thumbs Down Image No
X
No, thanks
255 characters remaining
X
Thank you for your feedback.
Comments or suggestions?