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Interpretation of Demographics Data

Demographic Data Report for Illinois by County
Population: Age 40 and over
All Races (includes Hispanic), Both Sexes
2017-2021 American Community Survey 5-Year Data
Sorted by Value

United States

Value (Percent) : The value is 47.9 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 157,871,085.
Rank within US : N/A

Illinois

Value (Percent) : The value is 48.0 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 6,149,809.
Rank within US : This state is ranked 28 of 52

Champaign County

Value (Percent) : The value is 37.8 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 78,005.
Rank within US : This county is ranked 3073 of 3143

DeKalb County

Value (Percent) : The value is 39.9 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 40,255.
Rank within US : This county is ranked 3011 of 3143

Jackson County

Value (Percent) : The value is 41.5 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 22,249.
Rank within US : This county is ranked 2946 of 3143

McLean County

Value (Percent) : The value is 42.2 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 72,417.
Rank within US : This county is ranked 2912 of 3143

Kendall County

Value (Percent) : The value is 43.9 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 57,407.
Rank within US : This county is ranked 2804 of 3143

McDonough County

Value (Percent) : The value is 43.9 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 12,185.
Rank within US : This county is ranked 2803 of 3143

Brown County

Value (Percent) : The value is 45.5 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 2,882.
Rank within US : This county is ranked 2647 of 3143

Cook County

Value (Percent) : The value is 46.2 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 2,431,087.
Rank within US : This county is ranked 2573 of 3143

Coles County

Value (Percent) : The value is 46.2 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 21,981.
Rank within US : This county is ranked 2564 of 3143

Kane County

Value (Percent) : The value is 47.2 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 244,692.
Rank within US : This county is ranked 2463 of 3143

Grundy County

Value (Percent) : The value is 47.4 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 24,846.
Rank within US : This county is ranked 2426 of 3143

Peoria County

Value (Percent) : The value is 47.5 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 86,598.
Rank within US : This county is ranked 2422 of 3143

Douglas County

Value (Percent) : The value is 47.6 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 9,374.
Rank within US : This county is ranked 2408 of 3143

Will County

Value (Percent) : The value is 47.7 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 332,202.
Rank within US : This county is ranked 2388 of 3143

Cass County

Value (Percent) : The value is 47.7 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 6,231.
Rank within US : This county is ranked 2383 of 3143

Lake County

Value (Percent) : The value is 48.2 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 344,261.
Rank within US : This county is ranked 2306 of 3143

Kankakee County

Value (Percent) : The value is 48.3 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 52,255.
Rank within US : This county is ranked 2281 of 3143

St. Clair County

Value (Percent) : The value is 48.9 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 126,441.
Rank within US : This county is ranked 2172 of 3143

Boone County

Value (Percent) : The value is 49.1 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 26,306.
Rank within US : This county is ranked 2143 of 3143

Effingham County

Value (Percent) : The value is 49.2 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 17,001.
Rank within US : This county is ranked 2124 of 3143

DuPage County

Value (Percent) : The value is 49.5 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 462,419.
Rank within US : This county is ranked 2066 of 3143

Winnebago County

Value (Percent) : The value is 49.6 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 141,593.
Rank within US : This county is ranked 2039 of 3143

Warren County

Value (Percent) : The value is 49.7 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 8,395.
Rank within US : This county is ranked 2017 of 3143

Logan County

Value (Percent) : The value is 49.9 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 14,098.
Rank within US : This county is ranked 1976 of 3143

Woodford County

Value (Percent) : The value is 50.0 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 19,276.
Rank within US : This county is ranked 1964 of 3143

Rock Island County

Value (Percent) : The value is 50.2 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 72,587.
Rank within US : This county is ranked 1927 of 3143

Madison County

Value (Percent) : The value is 50.2 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 133,720.
Rank within US : This county is ranked 1908 of 3143

McHenry County

Value (Percent) : The value is 50.6 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 157,161.
Rank within US : This county is ranked 1832 of 3143

Moultrie County

Value (Percent) : The value is 50.8 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 7,428.
Rank within US : This county is ranked 1779 of 3143

Sangamon County

Value (Percent) : The value is 50.8 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 99,911.
Rank within US : This county is ranked 1770 of 3143

Vermilion County

Value (Percent) : The value is 50.8 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 38,087.
Rank within US : This county is ranked 1756 of 3143

Macon County

Value (Percent) : The value is 51.0 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 53,205.
Rank within US : This county is ranked 1712 of 3143

Clinton County

Value (Percent) : The value is 51.0 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 18,910.
Rank within US : This county is ranked 1695 of 3143

Jefferson County

Value (Percent) : The value is 51.4 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 19,192.
Rank within US : This county is ranked 1618 of 3143

Lawrence County

Value (Percent) : The value is 51.5 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 7,969.
Rank within US : This county is ranked 1587 of 3143

Clark County

Value (Percent) : The value is 51.5 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 8,032.
Rank within US : This county is ranked 1586 of 3143

Adams County

Value (Percent) : The value is 51.5 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 33,958.
Rank within US : This county is ranked 1580 of 3143

Morgan County

Value (Percent) : The value is 51.6 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 17,120.
Rank within US : This county is ranked 1564 of 3143

Williamson County

Value (Percent) : The value is 51.7 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 34,790.
Rank within US : This county is ranked 1528 of 3143

Saline County

Value (Percent) : The value is 51.7 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 12,351.
Rank within US : This county is ranked 1516 of 3143

Perry County

Value (Percent) : The value is 51.8 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 10,963.
Rank within US : This county is ranked 1496 of 3143

Pike County

Value (Percent) : The value is 52.0 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 7,753.
Rank within US : This county is ranked 1461 of 3143

Tazewell County

Value (Percent) : The value is 52.0 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 68,628.
Rank within US : This county is ranked 1446 of 3143

Livingston County

Value (Percent) : The value is 52.0 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 18,679.
Rank within US : This county is ranked 1441 of 3143

Bond County

Value (Percent) : The value is 52.1 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 8,757.
Rank within US : This county is ranked 1422 of 3143

La Salle County

Value (Percent) : The value is 52.1 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 57,342.
Rank within US : This county is ranked 1417 of 3143

Knox County

Value (Percent) : The value is 52.3 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 26,244.
Rank within US : This county is ranked 1378 of 3143

Marion County

Value (Percent) : The value is 52.3 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 19,756.
Rank within US : This county is ranked 1377 of 3143

Fayette County

Value (Percent) : The value is 52.4 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 11,270.
Rank within US : This county is ranked 1357 of 3143

Ford County

Value (Percent) : The value is 52.6 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 7,154.
Rank within US : This county is ranked 1287 of 3143

Randolph County

Value (Percent) : The value is 52.7 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 16,144.
Rank within US : This county is ranked 1280 of 3143

Richland County

Value (Percent) : The value is 52.8 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 8,375.
Rank within US : This county is ranked 1268 of 3143

Christian County

Value (Percent) : The value is 52.9 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 17,996.
Rank within US : This county is ranked 1245 of 3143

Ogle County

Value (Percent) : The value is 52.9 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 27,410.
Rank within US : This county is ranked 1225 of 3143

Greene County

Value (Percent) : The value is 53.1 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 6,467.
Rank within US : This county is ranked 1193 of 3143

Cumberland County

Value (Percent) : The value is 53.1 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 5,590.
Rank within US : This county is ranked 1182 of 3143

Monroe County

Value (Percent) : The value is 53.1 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 18,446.
Rank within US : This county is ranked 1178 of 3143

Crawford County

Value (Percent) : The value is 53.1 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 10,004.
Rank within US : This county is ranked 1171 of 3143

Jersey County

Value (Percent) : The value is 53.2 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 11,461.
Rank within US : This county is ranked 1148 of 3143

Clay County

Value (Percent) : The value is 53.3 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 7,096.
Rank within US : This county is ranked 1132 of 3143

Montgomery County

Value (Percent) : The value is 53.3 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 15,188.
Rank within US : This county is ranked 1128 of 3143

Piatt County

Value (Percent) : The value is 53.5 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 8,912.
Rank within US : This county is ranked 1087 of 3143

De Witt County

Value (Percent) : The value is 53.7 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 8,406.
Rank within US : This county is ranked 1042 of 3143

Lee County

Value (Percent) : The value is 53.9 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 18,540.
Rank within US : This county is ranked 988 of 3143

Whiteside County

Value (Percent) : The value is 54.0 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 30,186.
Rank within US : This county is ranked 978 of 3143

Menard County

Value (Percent) : The value is 54.1 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 6,677.
Rank within US : This county is ranked 956 of 3143

Union County

Value (Percent) : The value is 54.2 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 9,362.
Rank within US : This county is ranked 927 of 3143

Franklin County

Value (Percent) : The value is 54.3 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 20,669.
Rank within US : This county is ranked 912 of 3143

Johnson County

Value (Percent) : The value is 54.3 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 7,193.
Rank within US : This county is ranked 901 of 3143

White County

Value (Percent) : The value is 54.4 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 7,588.
Rank within US : This county is ranked 895 of 3143

Bureau County

Value (Percent) : The value is 54.4 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 18,135.
Rank within US : This county is ranked 882 of 3143

Washington County

Value (Percent) : The value is 54.6 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 7,552.
Rank within US : This county is ranked 853 of 3143

Macoupin County

Value (Percent) : The value is 54.6 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 24,671.
Rank within US : This county is ranked 851 of 3143

Henry County

Value (Percent) : The value is 54.7 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 27,017.
Rank within US : This county is ranked 841 of 3143

Hamilton County

Value (Percent) : The value is 54.7 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 4,389.
Rank within US : This county is ranked 834 of 3143

Jasper County

Value (Percent) : The value is 54.8 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 5,107.
Rank within US : This county is ranked 820 of 3143

Fulton County

Value (Percent) : The value is 54.8 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 18,652.
Rank within US : This county is ranked 814 of 3143

Wayne County

Value (Percent) : The value is 54.9 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 8,922.
Rank within US : This county is ranked 798 of 3143

Wabash County

Value (Percent) : The value is 54.9 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 6,271.
Rank within US : This county is ranked 786 of 3143

Shelby County

Value (Percent) : The value is 54.9 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 11,626.
Rank within US : This county is ranked 784 of 3143

Iroquois County

Value (Percent) : The value is 55.2 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 15,115.
Rank within US : This county is ranked 722 of 3143

Massac County

Value (Percent) : The value is 55.3 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 7,890.
Rank within US : This county is ranked 719 of 3143

Pulaski County

Value (Percent) : The value is 55.6 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 2,935.
Rank within US : This county is ranked 671 of 3143

Mercer County

Value (Percent) : The value is 55.6 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 8,781.
Rank within US : This county is ranked 667 of 3143

Edwards County

Value (Percent) : The value is 55.9 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 3,484.
Rank within US : This county is ranked 634 of 3143

Gallatin County

Value (Percent) : The value is 56.0 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 2,821.
Rank within US : This county is ranked 625 of 3143

Stephenson County

Value (Percent) : The value is 56.4 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 25,275.
Rank within US : This county is ranked 574 of 3143

Mason County

Value (Percent) : The value is 56.4 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 7,464.
Rank within US : This county is ranked 566 of 3143

Marshall County

Value (Percent) : The value is 56.5 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 6,652.
Rank within US : This county is ranked 564 of 3143

Alexander County

Value (Percent) : The value is 56.5 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 3,099.
Rank within US : This county is ranked 562 of 3143

Edgar County

Value (Percent) : The value is 56.5 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 9,599.
Rank within US : This county is ranked 561 of 3143

Hancock County

Value (Percent) : The value is 56.8 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 10,080.
Rank within US : This county is ranked 528 of 3143

Stark County

Value (Percent) : The value is 57.2 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 3,110.
Rank within US : This county is ranked 484 of 3143

Putnam County

Value (Percent) : The value is 57.2 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 3,227.
Rank within US : This county is ranked 481 of 3143

Scott County

Value (Percent) : The value is 57.3 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 2,819.
Rank within US : This county is ranked 477 of 3143

Carroll County

Value (Percent) : The value is 57.8 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 9,014.
Rank within US : This county is ranked 423 of 3143

Henderson County

Value (Percent) : The value is 59.5 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 3,857.
Rank within US : This county is ranked 274 of 3143

Calhoun County

Value (Percent) : The value is 60.3 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 2,737.
Rank within US : This county is ranked 221 of 3143

Schuyler County

Value (Percent) : The value is 60.7 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 4,223.
Rank within US : This county is ranked 200 of 3143

Jo Daviess County

Value (Percent) : The value is 61.1 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 13,439.
Rank within US : This county is ranked 179 of 3143

Hardin County

Value (Percent) : The value is 61.4 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 2,273.
Rank within US : This county is ranked 169 of 3143

Pope County

Value (Percent) : The value is 63.9 percent.
People (Age 40 And Over) : The number of people (age 40 and over) is 2,440.
Rank within US : This county is ranked 88 of 3143

Notes:
Created by statecancerprofiles.cancer.gov on 09/27/2023 7:17 am.
Source: Demographic data provided by the Census Bureau and the American Community Survey.
For more information about Population: Age 40 and over, see the dictionary.
Data for United States does not include Puerto Rico.

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