The Info List - Cook County

U.S. Routes

State Routes


O'Hare International Chicago
Midway International Chicago
Executive Lansing Municipal Schaumburg Regional


Lake Michigan – Chicago
River Chicago
Sanitary and Ship Canal Calumet River – Des Plaines River North Shore Channel


Union Station Glenview – Homewood La Grange – Summit

Public transit Chicago Transit Authority
Chicago Transit Authority
(CTA) Metra – Pace – South Shore Line

Website www.cookcountyil.gov


White Black Asian

55.4% 24.8% 6.2%

Islander Native Other Hispanic (any race)

0.0% 0.4% 13.1% 24.0%

Cook County is a county in the U.S. state
U.S. state
of Illinois. It is the second-most populous county in the United States
United States
after Los Angeles County, California. As of 2015, the population was 5,238,216.[5] Its county seat is Chicago, the largest city in Illinois
and third-most populous city in the United States. More than 40% of all residents of Illinois
live in Cook County. Cook County's population is larger than that of 28 individual U.S. states, and the combined populations of the seven smallest states.[6] There are 135 incorporated municipalities partially or wholly within Cook County, the largest of which is Chicago, which is home to approximately 54% of the population of the county. That part of the county which lies outside the Chicago
city limits is divided into 29 townships; these often divide or share governmental services with local municipalities. Geographically, the county is the sixth-largest in Illinois
by land area. It shares the state's Lake Michigan shoreline with Lake County. Including its lake area, the county has a total area of 1,635 square miles (4,234.6 km2), the largest county in Illinois, of which 945 square miles (2,447.5 km2) is land and 690 square miles (1,787.1 km2) (42.16%) is water. Land-use in Cook County is mainly urban and densely populated. Cook County is included in the Chicago–Naperville–Elgin, IL–IN–WI Metropolitan Statistical Area. It is surrounded by what are known as the five collar counties.


1 History 2 Government and politics

2.1 Government 2.2 Politics 2.3 Secession

3 Geography

3.1 Climate and weather 3.2 Major highways 3.3 Adjacent counties 3.4 National protected area

4 Demographics 5 Communities

5.1 Cities 5.2 Towns 5.3 Villages 5.4 Unincorporated communities 5.5 Townships

5.5.1 Current townships 5.5.2 Former townships

6 See also 7 References 8 External links

History[edit] Cook County was created on January 15, 1831, out of Putnam County by an act of the Illinois
General Assembly. It was the 54th county established in Illinois
and was named after Daniel Cook, one of the earliest and youngest statesmen in Illinois
history. He served as the second U.S. Representative from Illinois
and the state's first Attorney General. In 1839, DuPage County was carved out of Cook County.

Cook County from 1831 to 1836

Cook County 1836–39 after the creation of Lake County

Cook County was reduced to its current size in 1839 by the creation of DuPage County.

Government and politics[edit] Government[edit] Main article: Government of Cook County, Illinois The government of Cook County is primarily composed of the Board of Commissioners, other elected officials such as the Sheriff, State's Attorney, Treasurer, Board of Review, Clerk, Assessor, Recorder, Circuit Court judges, and Circuit Court Clerk, as well as numerous other officers and entities. Cook County is the only home rule county in Illinois.[7] The Cook County Code is the codification of Cook County's local ordinances. Cook County's current County Board president is Toni Preckwinkle. The Circuit Court of Cook County, which is an Illinois
state court of general jurisdiction is funded, in part, by Cook County, and accepts more than 1.2 million cases each year for filing.[8] The Cook County Department of Corrections, also known as the Cook County Jail, is the largest single-site jail in the nation. The Cook County Juvenile Detention Center, under the authority of the Chief Judge of the court, is the first juvenile center in the nation and one of the largest in the nation. The Cook County Law Library is the second-largest county law library in the nation. In the 1980s, Cook County was ground zero to an extensive FBI investigation called Operation Greylord. Ninety-two officials were indicted, including 17 judges, 48 lawyers, 8 policemen, 10 deputy sheriffs, 8 court officials, and a state legislator. The Bureau of Health Services administers the county's public health services and is the third-largest public health system in the nation. Three hospitals are part of this system: John H. Stroger, Jr. Hospital of Cook County, Provident Hospital, and Oak Forest Hospital of Cook County, along with over 30 clinics. The Cook County Department of Transportation is responsible for the design and maintenance of roadways in the county. These thoroughfares are composed mostly of major and minor arterials, with a few local roads. Although the County Department of Transportation was instrumental in designing many of the expressways in the county, today they are under the jurisdiction of the state. The Cook County Forest Preserves, organized in 1915, is a separate, independent taxing body, but the Cook County Board
Cook County Board
of Commissioners also acts as its Board of Commissioners. The district is a belt of 69,000 acres (280 km2) of forest reservations surrounding the city of Chicago. The Brookfield Zoo
Brookfield Zoo
(managed by the Chicago
Zoological Society) and the Chicago
Botanic Garden (managed by the Chicago Horticultural Society) are located in the forest preserves. Cook County is the fifth-largest employer in Chicago.[9] In March 2008, the County Board increased the sales tax by one percent to 1.75 percent. This followed a quarter-cent increase in mass transit taxes. In Chicago, the rate increased to 10.25 percent, the steepest nominal rate of any major metropolitan area in America. In Evanston, sales tax reached 10 percent and Oak Lawn residents pay 9.5 percent.[10] On July 22, 2008, the Cook County board voted against Cook County Commissioner's proposal to repeal the tax increase.[11] In 2016, Cook County joined Chicago
in adopting a $13 hourly minimum wage.[12] Cook County Board
Cook County Board
chairman John Daley called the wage hike "the moral and right thing to do." In June 2017, however, nearly 75 home rule municipalities passed measures opting themselves out of the increase.[13] Politics[edit] The county has more Democratic Party members than any other Illinois county and it is one of the most Democratic counties in the United States. Since 1932, the majority of its voters have only supported a Republican candidate in a Presidential election three times, all during national Republican landslides– Dwight Eisenhower
Dwight Eisenhower
over native son Adlai Stevenson II
Adlai Stevenson II
in 1952 and 1956, and Richard Nixon
Richard Nixon
over George McGovern in 1972. Since then, the closest a Republican has come to carrying the county was in 1984, when Ronald Reagan
Ronald Reagan
won 48.4 percent of the county's vote. The 1970 Illinois
Constitution allows the party controlling the state legislature to redraw voting districts. The Democrats won complete control of state government in 2003; since then redistricting combined with demographic changes resulted in the party winning additional seats in the U.S. House of Representatives
U.S. House of Representatives
from Republicans in 2012. Analysts say the redistricting better represented the demographics of the state.[14][15][16] Republicans are well established in certain districts, where they elect Republican candidates of their choice.[17] The Cook County Democratic Party
Cook County Democratic Party
represents Democratic voters in 50 wards in the city of Chicago
and 30 suburban townships of Cook County. The organization has dominated County, city, and state politics since the 1930s. The last Republican mayor of Chicago
was William Hale "Big Bill" Thompson, who left office in 1931 with a record of corruption. The high-water mark for Republican candidacies for mayor since then was that of Republican candidate Bernard Epton, who in 1983 came within 3.3 percentage points of defeating Democrat Harold Washington.[18]

Presidential Elections Results[19]

Year Republican Democratic Third Parties

2016 20.8% 453,287 73.9% 1,611,946 5.3% 115,111

2012 24.6% 495,542 73.9% 1,488,537 1.5% 30,740

2008 22.8% 487,736 76.2% 1,629,024 1.0% 20,706

2004 29.2% 597,405 70.3% 1,439,724 0.6% 12,305

2000 28.7% 534,542 68.6% 1,280,547 2.7% 50,818

1996 26.7% 461,557 66.8% 1,153,289 6.5% 111,820

1992 28.2% 605,300 58.2% 1,249,533 13.6% 291,822

1988 43.4% 878,582 55.8% 1,129,973 0.9% 17,589

1984 48.4% 1,055,558 51.0% 1,112,641 0.6% 12,536

1980 39.6% 856,574 52.0% 1,124,584 8.4% 181,939

1976 44.7% 987,498 53.4% 1,180,814 1.9% 41,436

1972 53.4% 1,234,307 46.0% 1,063,268 0.6% 13,462

1968 41.1% 960,493 50.6% 1,181,316 8.3% 194,729

1964 36.8% 895,718 63.2% 1,537,181

1960 43.3% 1,059,607 56.4% 1,378,343 0.3% 7,319

1956 56.8% 1,293,223 43.0% 977,821 0.3% 5,800

1952 50.2% 1,188,973 49.5% 1,172,454 0.3% 6,512

1948 45.2% 1,015,800 54.2% 1,216,636 0.6% 13,463

1944 41.9% 924,659 57.8% 1,275,367 0.3% 6,165

1940 44.4% 938,454 55.2% 1,168,141 0.4% 8,212

1936 34.9% 701,206 62.4% 1,253,164 2.7% 55,087

1932 41.5% 690,146 55.2% 919,231 3.3% 54,855

1928 52.7% 812,063 46.5% 716,283 0.8% 11,825

1924 61.9% 688,973 20.3% 226,141 17.8% 198,538

1920 71.1% 635,197 22.1% 197,499 6.8% 60,441

1916 51.2% 435,695 44.6% 379,438 4.2% 35,830

1912 17.4% 74,851 30.4% 130,702 52.2% 223,759

1908 55.5% 230,400 36.9% 152,990 7.6% 31,701

1904 58.5% 229,848 26.4% 103,762 15.1% 59,335

1900 50.8% 203,760 46.4% 186,193 2.8% 11,181

1896 58.4% 221,823 40.1% 152,146 1.5% 5,639

1892 42.6% 111,254 55.3% 144,604 2.1% 5,472

movements[edit] To establish more localized government control and policies which reflect the often different values and needs of large suburban sections of the sprawling county, several secession movements have been made over the years which called for certain townships or municipalities to form their own independent counties. In the late 1970s, a movement started which proposed a separation of six northwest suburban townships, Cook County's panhandle (Barrington, Hanover, Palatine, Wheeling, Schaumburg, and Elk Grove) from Cook to form Lincoln County, in honor of the former U.S. president and Illinois
resident.[20] It is likely that Arlington Heights would have been the county seat. This northwest suburban region of Cook was at the time moderately conservative and has a population over 500,000. Local legislators, led by State Senator Dave Regnar, went so far as to propose it as official legislation in the Illinois
House. The legislation died, however, before coming to a vote. In 2004, Blue Island Mayor Donald E. Peloquin organized a coalition of fifty-five south and southwest suburban municipalities to form a new county, also proposing the name Lincoln County. The county would include everything south of Burbank, stretching as far west as Orland Park, as far east as Calumet City, and as far south as Matteson, covering an expansive area with a population of over one million residents. Peloquin argued that the south suburbs are often shunned by the city (although Chicago
is not bound or required to do anything for other municipalities) and he blamed the Chicago-centric policies of Cook County for failing to jumpstart the somewhat-depressed south suburban local economy. Pending sufficient interest from local communities, Peloquin planned a petition drive to place a question regarding the secession on the general election ballot, but the idea was not met with success.[21] Talk
of secession from Cook County amongst some outlying communities again heated up in mid-2008 in response to a highly controversial 1% sales tax hike which has pushed the tax rates across the county communities up amongst the highest in the nation. Some border towns in particular had been outraged, as people can take their business across the county border (paying, for instance, 7% in Lake County instead of Palatine's 9.5%).[22] The secession issue eventually died down from the nominal tax increase. In 2011, two downstate Republican state representatives, Bill Mitchell of the 87th district and Adam Brown of the 101st district, proposed statehood for Cook County. Mitchell said that Chicago
is "dictating its views" to the rest of the state and Brown added that Chicago "overshadows" the rest of Illinois.[23] Geography[edit] According to the U.S. Census Bureau, the county has a total area of 1,635 square miles (4,230 km2), of which 945 square miles (2,450 km2) is land and 690 square miles (1,800 km2) (42.2%) is water.[24] It is the sixth largest county in Illinois
by land area, and the largest in total area. Most of the water is in Lake Michigan. The highest point is more than 950 feet (290 m),[1][2] and is in northwest Barrington Township, in the northwest corner of the county. The lowest point is less than 580 feet (180 m),[1][3] along the Lake Michigan
Lake Michigan
shoreline. Climate and weather[edit]

Chicago, Illinois

Climate chart (explanation)


    2.2     32 18

    1.8     38 24

    3     47 32

    3.7     59 42

    3.7     70 51

    4.3     80 61

    3.7     84 66

    3.9     83 65

    3.2     76 57

    2.7     64 46

    3.3     49 35

    2.6     37 24

Average max. and min. temperatures in °F

Precipitation totals in inches

Source: The Weather Channel[25]

Metric conversion


    55     0 −8

    45     3 −4

    76     8 0

    93     15 6

    94     21 11

    109     27 16

    93     29 19

    98     28 18

    82     24 14

    69     18 8

    84     9 2

    67     3 −4

Average max. and min. temperatures in °C

Precipitation totals in mm

In July, temperatures in Chicago, Cook County average daytime highs of 84 °F (29 °C), and nighttime lows of 68 °F (20 °C); and January daytime highs of 31 °F (−1 °C), and nighttime lows of 18 °F (−8 °C). Winter temperatures will sometimes veer above 40 °F (4 °C), and, although not common, have also risen over 50 °F (10 °C) on some winter days. Average monthly precipitation ranged from 4.30 inches (109 mm) in June to 1.77 inches (45 mm) in February.[25] Major highways[edit]

I-55 I-57 I-80 I-88 I-90 / I-94 / Chicago
Skyway I-190 I-290 I-294 I-355 US 6 US 12 US 14 US 20 US 30 US 34 US 41 US 45 US 66 Illinois
Route 1 Illinois
Route 7 Illinois
Route 19 Illinois
Route 21 Illinois
Route 25 Illinois
Route 38 Illinois
Route 43 Illinois
Route 50 Illinois
Route 53 Illinois
Route 56 Illinois
Route 58 Illinois
Route 59 Illinois
Route 62 Illinois
Route 64 Illinois
Route 68 Illinois
Route 72 Illinois
Route 83 Illinois
Route 110 Illinois
Route 171 Illinois
Route 390 Illinois
Route 394

Adjacent counties[edit]

Lake County, Illinois
– north Lake County, Indiana
– southeast Will County, Illinois
– south DuPage County, Illinois
– west Kane County, Illinois
– west McHenry County, Illinois
– northwest Berrien County, Michigan
Berrien County, Michigan
– east

Cook County is among the few counties in the United States
United States
to border two counties with the same name (Lake County, Illinois
and Lake County, Indiana). Illinois
has two such counties (Randolph County borders both Perry County, Illinois
and Perry County, Missouri). National protected area[edit]

Portage National Historic Site Pullman National Monument


Historical population

Census Pop.

1840 10,201

1850 43,385


1860 144,954


1870 349,966


1880 607,524


1890 1,191,922


1900 1,838,735


1910 2,405,233


1920 3,053,017


1930 3,982,123


1940 4,063,342


1950 4,508,792


1960 5,129,725


1970 5,492,369


1980 5,253,655


1990 5,105,067


2000 5,376,741


2010 5,194,675


Est. 2016 5,203,499 [26] 0.2%

U.S. Decennial Census[27] 1790–1960[28] 1900–1990[29] 1990–2000[30] 2010–2013[31]

As of the 2010 Census, the population of the county was 5,194,675, White Americans made up 55.4% of Cook County's population; non-Hispanic whites represented 43.9% of the population. African Americans made up 24.8% of the population. Native Americans made up 0.4% of Cook County's population. Asian Americans made up 6.2% of the population (1.8% Indian, 1.2% Filipino, 1.2% Chinese, 0.7% Korean, 0.3% Vietnamese, 0.2% Japanese, 0.8% Other). Pacific Islander Americans made up just 0.0% of the population. People from other races made up 10.6% of the population; people from two or more races made up 2.5% of the county's population. Hispanics and Latinos (of any race) made up 24.0% of Cook County's population. As of the 2000 Census,[32] there were 5,376,741 people, 1,974,181 households, and 1,269,398 families residing in the county. The population density was 5,686 people per square mile (2,195/km²). There were 2,096,121 housing units at an average density of 2,216 per square mile (856/km²). The racial makeup of the county was 56.27% white, 26.14% Black or African American, 0.29% Native American, 4.84% Asian, 0.05% Pacific Islanders, 9.88% from other races, and 2.53% from two or more races. 19.93% of the population were Hispanic or Latino of any race. 9.1% were of Polish, 8.1% German, 7.9% Irish and 5.7% Italian ancestry according to Census 2000. 17.63% reported speaking Spanish at home; 3.13% speak Polish.[33] Whites (Hispanic and non-Hispanic) number roughly 2,793,500. There are about 2,372,500 non-Hispanic whites residing in Cook County. Sizeable non-Hispanic white populations are those of German (11.4%), Irish (10.3%), Polish (9.7%), Italian (6.1%), and British (4.1%) descent. There are also significant groups of Swedish (1.5%), Russian (1.5%), French (1.3%), Greek (1.2%), Czech (1.0%), Dutch (1.0%), Lithuanian (0.9%), and Norwegian (0.8%) descent.

2000 census age pyramid for Cook County

Black Americans are the second largest racial group. Black Americans form over one-quarter (25.4%) of Cook County's population. Blacks of non-Hispanic origin form 25.2% of the population; black Hispanics make up the remaining 0.2% of the populace. There are roughly 1,341,000 African Americans of both Hispanic and non-Hispanic origin living in Cook County; 1,328,000 are non-Hispanic blacks. Roughly 52,500 people were of Sub-Saharan African ancestry, making up 1.0% of the total population. The Native American population is sizeable but small proportionally. Over 10,200 residents of Cook County are of Native American ancestry, equivalent to just 0.2% of the total population. There are 974 Cherokee, 612 Chippewa, 430 Navajo, and 96 Sioux
living in Cook County. Native Americans of Hispanic origin represent much of the Native American population group. Some 5,900 Native Americans are of non-Hispanic origin, so some 4,300 are of Hispanic origin. Over 40% of the Native American racial group is of Hispanic descent.

Non-English speakers in Cook County

Asian Americans are a sizeable racial group in the county, numbering over 300,800. The Asian population is ethnically diverse, and includes roughly 87,900 Indians, 61,700 Filipinos, 60,700 Chinese, 35,000 Koreans, 13,700 Vietnamese, and 11,100 Japanese. Roughly 30,800 are of other Asian ethnic groups, such as Thai, Cambodian, and Hmong. Indian Americans make up 1.7% of the population, while Chinese and Filipino Americans make up 1.2% of the population each. Pacific Islander Americans form the smallest racial group in Cook County. Just over 3,000 are of Pacific Islander heritage. This group includes roughly 780 Native Hawaiians, 670 Guamanians, 120 Samoans, and 1,400 people of other Pacific Islander groups. Hispanic and Latino Americans
Hispanic and Latino Americans
make up over one-fifth (22.8%) of Cook County's population. Roughly 1,204,000 Hispanics live in the county. Mexicans are, by far, the most common Hispanic group. Cook County's 925,000 Mexican Americans make up 17.5% of its population. Roughly 127,000 Puerto Ricans make up 2.4% of the population. About 12,200 Cubans form 0.2% of the total population. There are some 140,000 Hispanics and Latinos of other nationalities living in Cook County (i.e. Colombian, Bolivian, etc., and they collectively make up 2.6% of the county's population.[34][35] According to the 2000 Census there were 1,974,181 households out of which 30.9% had children under the age of 18 living with them, 44.0% were married couples living together, 15.6% had a female householder with no husband present, and 35.7% were non-families. 29.4% of all households were someone living alone including 9.3% who were 65 years of age or older. The average household size was 2.68 and the average family size was 3.38. In the county, the population age distribution was: 26.0% under the age of 18, 9.9% from 18 to 24, 31.7% from 25 to 44, 20.7% from 45 to 64, and 11.7% who were 65 years of age or older. The median age was 34 years. For every 100 females there were 93.9 males. For every 100 females age 18 and over, there were 90.5 males. The median income for a household in the county was $45,922, and the median income for a family was $53,784. Males had a median income of $40,690 versus $31,298 for females. The per capita income for the county was $23,227. About 10.6% of families and 13.5% of the population were below the poverty line, including 18.9% of those under age 18 and 10.3% of those age 65 or over. According to Census Bureau estimates, the county's population was down to 5,303,683 in 2005,[36] decreased further by 2010 (5,194,675) and had grown slightly by 2014 (5,246,456). Communities[edit] Cities[edit]

Berwyn Blue Island Burbank Calumet City Chicago
(partly in DuPage County) Chicago
Heights Country Club Hills Countryside Des Plaines Elgin (part) Elmhurst (part) Evanston Harvey Hickory Hills Hometown Markham Northlake Oak Forest Palos Heights Palos Hills Park Ridge Prospect Heights Rolling Meadows




Alsip Arlington Heights Barrington (partly in Lake County) Barrington Hills (mostly) Bartlett (part) Bedford Park Bellwood Bensenville (partly in DuPage County) Berkeley Bridgeview Broadview Brookfield Buffalo Grove (partly in Lake County) Burnham Burr Ridge (partly in DuPage County) Calumet Park Chicago
Ridge Crestwood Deer Park (partly in Lake County) Deerfield (partly in Lake County) Dixmoor Dolton East Dundee (partly in Kane County) East Hazel Crest Elk Grove Village (mostly) Elmwood Park Evergreen Park Flossmoor Ford Heights Forest Park Forest View Frankfort (part) Franklin Park Glencoe Glenview Glenwood Golf Hanover Park ( mostly in Cook County) Harwood Heights Hazel Crest Hillside Hinsdale (partly in DuPage County) Hodgkins Hoffman Estates (partly in Kane County) Homewood Indian Head Park Inverness Justice Kenilworth La Grange La Grange Park Lansing Lemont (partly in DuPage County and Will County) Lincolnwood Lynwood Lyons Matteson (partly in Will County) Maywood McCook Melrose Park Merrionette Park Midlothian Morton Grove Mount Prospect Niles Norridge North Riverside Northbrook Northfield Oak Brook (partly in DuPage County) Oak Forest Oak Lawn Oak Park Olympia Fields Orland Hills Orland Park (partly in Will County) Palatine Palos Park Park Forest (partly in Will County) Phoenix Posen Richton Park River Forest River Grove Riverdale Riverside Robbins Roselle (partly in DuPage County) Rosemont Sauk Village (partly in Will County) Schaumburg (partly in DuPage County) Schiller Park Skokie South Barrington South Chicago
Heights South Holland Steger (partly in Will County) Stickney Stone Park Streamwood Summit Thornton Tinley Park (partly in Will County) University Park (partly in Will County) Westchester Western Springs Wheeling (partly in Lake County) Willow Springs (partly in DuPage County) Wilmette Winnetka Woodridge (partly in DuPage County and Will County) Worth

Unincorporated communities[edit]

Central Stickney Hines La Grange Highlands Nottingham Park Sag Bridge Sutton

Townships[edit] The county is divided into 29 townships, in addition to the cities of Chicago
and Evanston.

Cook County townships (clickable)

Current townships[edit] The 29 townships of Cook County, with their populations as of the 2010 Census, are:[37]

Thornton Township – 169,326 Wheeling Township – 153,630 Worth Township – 152,633 Proviso Township – 151,704 Maine Township – 135,772 Schaumburg Township – 131,288 Palatine Township – 112,994 Lyons Township – 111,688 Bremen Township – 110,118 Niles Township – 105,882 Hanover Township – 99,538 Orland Township – 97,558 Elk Grove Township – 92,905 Leyden Township – 92,890 Bloom Township – 90,922 Northfield Township – 85,102 Cicero Township – 83,891 Rich Township – 76,727 Berwyn Township – 56,657 New Trier Township – 55,424 Palos Township – 54,615 Oak Park Township – 51,878 Stickney Township – 40,772 Norwood Park Township – 26,385 Lemont Township – 21,113 Calumet Township – 20,777 Barrington Township – 15,636 Riverside Township – 15,594 River Forest Township – 11,172

Former townships[edit] Chicago's eight former townships and annexed parts of others no longer have any governmental structure or responsibility since their annexations, but their names and boundaries are still used on property plats and by Cook County for tax assessment purposes. In 2014, Evanston Township was dissolved by voters and its functions were absorbed by the city of Evanston.[38]

Evanston Township Jefferson Township Hyde Park Township Lake Township Lake View Township North Township Rogers Park Township South Township West Township

See also[edit]


metropolitan area Cook County Forest Preserve District Metropolitan Water Reclamation District of Greater Chicago National Register of Historic Places listings in Cook County, Illinois


^ a b c d "Lowest and Highest Points in Cook County". Illinois
State Geological Survey. Retrieved 2016-11-30. Greater than 950 ft max and Less than 580 ft min  ^ a b Streamwood Quadrangle – Illinois – Cook Co (Map). 1:24,000. 7.5-Minute Series (Topographic). United States
United States
Geological Survey. 2013.  ^ a b Chicago Loop
Chicago Loop
Quadrangle – Illinois – Cook Co (Map). 1:24,000. 7.5-Minute Series (Topographic). United States Geological Survey. 2013.  ^ U.S. Census Bureau. American Community Survey, Profile of General Population and Housing Characteristics 2010, Table DP-1, 2010 Demographic Profile Data. American FactFinder Archived September 11, 2013, at the Wayback Machine.. Retrieved 2014-06-22. ^ United States
United States
Census Bureau, Quick Facts, Internet website, accessed January 20, 2016. ^ "County Population Estimates". Retrieved 2014-04-04.  ^ Gove, Samuel Kimball (1996). Illinois
Politics and Government: The Expanding Metropolitan Frontier. Politics and Governments of the American States. University of Nebraska Press. p. 156. ISBN 0-8032-7014-3. LCCN 95046017. Retrieved 2014-04-04.  ^ " Circuit Court of Cook County
Circuit Court of Cook County
an Informational Guide" (PDF). 2008. Archived from the original (PDF) on March 1, 2007. Retrieved December 16, 2008.  ^ "All the extra cost will be no small change". Chicago
Tribune. 2008. Retrieved March 2, 2008.  ^ "Chicago's Largest Employers". ChicagoBusiness.  ^ " Cook County Board
Cook County Board
'rejects' sales tax increase repeal". Chicago Tribune. July 22, 2008. Retrieved July 23, 2008.  ^ Elejalde-Ruiz, Alexia. "Cook County approves $13 hourly minimum wage affecting suburbs". Chicago
Tribune. Retrieved December 6, 2016.  ^ Slowik, Ted (June 28, 2017). "Slowik: Towns are right to opt out of Cook County minimum wage law". Daily Southtown. Retrieved June 30, 2017.  ^ Howley, Kerry (November 6, 2012). "Tammy Duckworth Wins in Illinois, as Does Gerrymandering and Deadbeat-Dad Shaming". Slate. Retrieved November 11, 2012.  ^ Bazelon, Emily (November 9, 2012). "It's Appalling that Gerrymandering Is Legal". Slate. Retrieved November 11, 2012.  ^ Greenbaum, Mark (June 8, 2011). "Democrats' revenge in 2012: a radical Illinois
gerrymander". Christian Science Monitor. Retrieved November 11, 2012.  ^ See, e.g., Cook County Board
Cook County Board
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Census Bureau. Retrieved July 4, 2014.  ^ "State & County QuickFacts". United States
United States
Census Bureau. Retrieved January 20, 2016.  ^ "American FactFinder". United States
United States
Census Bureau. Archived from the original on September 11, 2013. Retrieved 2008-01-31.  ^ "Language Map Data Center". www.mla.org.  ^ American FactFinder Archived October 17, 2012, at the Wayback Machine. ^ American FactFinder Archived October 17, 2012, at the Wayback Machine. ^ Cook County, Illinois, United States Census Bureau
United States Census Bureau
Archived November 26, 2010, at the Wayback Machine. ^ "accessed 2011 May 17". Factfinder2.census.gov. October 5, 2010. Retrieved 2014-04-04.  ^ Matthew Dietrich (September 19, 2014). "Evanston Township ceases to exist". Huffington Post. Retrieved November 17, 2016. 

External links[edit]

Wikimedia Commons has media related to Cook County, Illinois.

Cook County Government Website Cook County Assessor Cook County Board
Cook County Board
of Review Circuit Court of Cook County Clerk of the Circuit Court of Cook County Clerk of Cook County

Vote! from the Cook County Election Department

Cook County Recorder of Deeds Cook County Sheriff Cook County Jail Cook County State's Attorney Cook County Treasurer Forest Preserve District of Cook County Cook County History Pages

Places adjacent to Cook County, Illinois

McHenry County Lake County

DuPage County and Kane County

Cook County, Illinois

Berrien County, Michigan

Will County Lake County, Indiana

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Municipalities and communities of Cook County, Illinois, United States

County seat: Chicago


Berwyn Blue Island Brookfield Burbank Calumet City Chicago‡ Chicago
Heights Country Club Hills Countryside Des Plaines Elgin‡ Elmhurst‡ Evanston Harvey Hickory Hills Hometown Markham Northlake Oak Forest Palos Heights Palos Hills Park Ridge Prospect Heights Rolling Meadows




Alsip Arlington Heights Barrington‡ Barrington Hills‡ Bartlett‡ Bedford Park Bellwood Bensenville‡ Berkeley Bridgeview Broadview Buffalo Grove‡ Burnham Burr Ridge‡ Calumet Park Chicago
Ridge Crestwood Deer Park‡ Deerfield‡ Dixmoor Dolton East Dundee‡ East Hazel Crest Elk Grove Village‡ Elmwood Park Evergreen Park Flossmoor Ford Heights Forest Park Forest View Frankfort‡ Franklin Park Glencoe Glenview Glenwood Golf Hanover Park‡ Harwood Heights Hazel Crest Hillside Hinsdale‡ Hodgkins Hoffman Estates‡ Homewood Indian Head Park Inverness Justice Kenilworth La Grange La Grange Park Lansing Lemont‡ Lincolnwood Lynwood Lyons Matteson‡ Maywood McCook Melrose Park Merrionette Park Midlothian Morton Grove Mount Prospect Niles Norridge North Riverside Northbrook Northfield Oak Brook‡ Oak Lawn Oak Park Olympia Fields Orland Hills Orland Park‡ Palatine Palos Park Park Forest‡ Phoenix Posen Richton Park River Forest River Grove Riverdale Riverside Robbins Roselle‡ Rosemont Sauk Village‡ Schaumburg‡ Schiller Park Skokie South Barrington South Chicago
Heights South Holland Steger‡ Stickney Stone Park Streamwood Summit Thornton Tinley Park‡ University Park‡ Westchester Western Springs Wheeling Willow Springs‡ Wilmette Winnetka Woodridge‡ Worth


Barrington Berwyn Bloom Bremen Calumet Cicero Elk Grove Hanover Lemont Leyden Lyons Maine New Trier Niles Northfield Norwood Park Oak Park Orland Palatine Palos Proviso Rich River Forest Riverside Schaumburg Stickney Thornton Wheeling Worth

Unincorporated communities

Central Stickney Hines Indian Hill La Grange Highlands Nottingham Park Sag Bridge Sutton


‡This populated place also has portions in an adjacent county or counties

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metropolitan area

Major city


Cities (over 30,000 in 2010)

Aurora Berwyn Calumet City Chicago
Heights Crystal Lake DeKalb Des Plaines Elgin Elmhurst Evanston Gary Hammond Joliet Kenosha Naperville North Chicago Park Ridge Portage St. Charles Valparaiso Waukegan Wheaton

Towns and villages (over 30,000 in 2010)

Addison Algonquin Arlington Heights Bartlett Bolingbrook Buffalo Grove Carol Stream Carpentersville Cicero Downers Grove Elk Grove Village Glendale Heights Glenview Gurnee Hanover Park Hoffman Estates Lombard Merrillville Mount Prospect Mundelein Northbrook Oak Lawn Oak Park Orland Park Oswego Palatine Plainfield Romeoville Schaumburg Skokie Streamwood Tinley Park Wheeling Woodridge


Cook DeKalb DuPage Grundy Jasper Kane Kendall Kenosha Lake, IL Lake, IN McHenry Newton Porter Will


Great Lakes Northern Illinois Northern Indiana


Southland Eastern Ridges and Lowlands Fox Valley (Illinois) Golden Corridor Illinois
Technology and Research Corridor North Shore (Chicago) Northwest Indiana

Illinois, United States

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 State of Illinois

Springfield (capital)


Index Buildings and structures Census areas Communications Culture Delegations Earthquakes Economy Education Energy Environment Geography Government Health History Languages Law Music People Politics Portal Protected areas Society Sports Tourism Transportation Windmills

Seal of Illinois


American Bottom Central Illinois Champaign–Urbana metropolitan area Chicago
metropolitan area Collar counties Corn Belt Driftless Area Forgottonia Fox Valley Illinois-Indiana-Kentucky tri-state area Metro East Metro Lakeland Mississippi Alluvial Plain North Shore Northern Illinois Northwestern Illinois Peoria metropolitan area Quad Cities River Bend Rockford metropolitan area Southern Illinois Streatorland Wabash Valley

Cities, towns and villages

Alton/Granite City/Edwardsville Arlington Heights/Palatine Aurora/Naperville/Oswego/Plainfield Bartlett/Hanover Park/Streamwood Belleville/East St. Louis/Collinsville/O'Fallon Berwyn/Cicero Bloomington/Normal Bolingbrook/Romeoville Buffalo Grove/Wheeling Calumet City Canton Carbondale Carol Stream/Glendale Heights Centralia Champaign/Urbana Charleston/Mattoon Chicago Chicago
Heights Crystal Lake/Algonquin Danville Decatur DeKalb/Sycamore Des Plaines/Mount Prospect/Park Ridge Dixon Downers Grove/Woodridge Effingham Elgin/Carpentersville Elmhurst/Lombard/Addison Evanston/Skokie Freeport Galesburg Glenview/Northbrook Harrisburg Jacksonville Joliet Kankakee/Bradley/Bourbonnais Lincoln Macomb Marion/Herrin Moline/East Moline/Rock Island Mount Vernon Mundelein Oak Lawn Oak Park Orland Park/Tinley Park Ottawa/Streator/LaSalle/Peru Peoria/Pekin/East Peoria/Morton/Washington Pontiac Quincy Rochelle Rockford/Belvidere/Machesney Park/Loves Park St. Charles Schaumburg/Hoffman Estates/Elk Grove Village Springfield Sterling/Rock Falls Taylorville Waukegan/North Chicago/Gurnee Wheaton


Adams Alexander Bond Boone Brown Bureau Calhoun Carroll Cass Champaign Christian Clark Clay Clinton Coles Cook Crawford Cumberland DeKalb DeWitt Douglas DuPage Edgar Edwards Effingham Fayette Ford Franklin Fulton Gallatin Greene Grundy Hamilton Hancock Hardin Henderson Henry Iroquois Jackson Jasper Jefferson Jersey Jo Daviess Johnson Kane Kankakee Kendall Knox LaSalle Lake Lawrence Lee Livingston Logan Macon Macoupin Madison Marion Marshall Mason Massac McDonough McHenry McLean Menard Mercer Monroe Montgomery Morgan Moultrie Ogle Peoria Perry Piatt Pike Pope Pulaski Putnam Randolph Richland Rock Island Saline Sangamon Schuyler Scott Shelby St. Clair Stark Stephenson Tazewell Union Vermilion Wabash Warren Washington Wayne White Whiteside Will Williamson Winneb