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  •   State: 
    36° 58′ N to 42° 30′ N | 87° 30′ W to 91° 31′ W
      Area total: 
    57,915 sq mi (149,997 km²) [37,064,667.520 acres]
      Area land: 
    55,593 sq mi (143,969 km²) [35,528,955.520 acres]
      Area water: 
    3.99% = 2,320 sq mi (5,981 km²) [1,535,712.000 acres]
    1,235 ft (376.4 m) Charles Mound
    December 3, 1818 (21nd State in the Union)
      Capital seat: 


  • Illinois, United States

  •   Population: 
      Population density: 
    232/sq mi (89.4/km²) - residents per square mile of area.
      Household income: 
      Unemployment rate: 
  •   Sales taxes: 
      Income taxes: 
    $1,033,310 (2022) nominal GDP at current prices 2022 (millions of U.S. dollars). This is equivalent to 4.11% of the U.S. national real gross domestic product (GDP) in 2022, or 4.13% from 2021.  9.3% change in GDP from 2022 to 2021 =  87,636. Real GDP growth rate (2021–2022) =  5.0%. Nominal GDP per capita 2022 = $82,126 respectively per capita 2023 = $85,111.
      Housing units: 
    5,452,765 units, July 1, 2022 estimate = a 0.5% increase compared to 2020, specifically 26,337 more housing units.

Illinois is a state in the Midwestern and Great Lakes region of the United States. It has the fifth largest gross domestic product (GDP), the sixth largest population, and the 25th largest land area of all U.S. states. Illinois is often noted as a microcosm of the entire United States. With Chicago in northeastern Illinois, small industrial cities and immense agricultural productivity in the north and center of the state, and natural resources such as coal, timber, and petroleum in the south, Illinois has a diverse economic base, and is a major transportation hub. Chicagoland, Chicago's metropolitan area, encompasses over 65% of the state's population. The Port of Chicago connects the state to international ports via two main routes: from the Great Lakes, via the Saint Lawrence Seaway, to the Atlantic Ocean and from the Great Lakes to the Mississippi River, via the Illinois Waterway to the Illinois River. The Mississippi River, the Ohio River, and the Wabash River form parts of the boundaries of Illinois. For decades, Chicago's O'Hare International Airport has been ranked as one of the world's busiest airports. Illinois has long had a reputation as a bellwether both in social and cultural terms and, through the 1980s, in politics. The capital of Illinois is Springfield, which is located in the central part of the state. Although today's Illinois' largest population center is in its northeast, the state's European population grew first in the west as the French settled the vast Mississippi of the Illinois Country of New France.

As shown in the Illinois location map that Illinois is located in the central-north part of the US. Illinois state US is world famous because of its city Chicago; it has one of the busiest airports of the world. However, the state is surrounded with some of the most industrialized states of the US. In addition, the Illinois state US is full of natural resources including coal, petroleum, and timber. The state has also large percentage of fertile land. Above all, it is a transportation hub of the US.

Admitted as the 21st state of the US, Illinois shares its boundary with Wisconsin in the north, Iowa in the west, Missouri in the south west, Kentucky in the south and south-east, and Indiana in the east. However, as you can see on the given map of Illinois state that the small north-east portion of the state makes coastline with Lake Michigan.

With the humid continental type of climate, the state has many features that make it significant such as Ronald Regan one of the American Presidents was the native of this state, some of the other Presidents of the US elected as President while they were living in Illinois including, Abraham Lincoln, Ulysses S. Grant, and Barack Obama.

Also known as 'The Bean,' Cloud Gate is Chicago's best-loved attraction - and no visit to the Windy City (or the Midwest) is complete without pictures of your family's reflection on the famous landmark. You can visualize easily on Illinois map that state has many significant cities to visit. The capital city of Illinois US is Springfield. Illinois state map comprises railways, highways, significant big and small cities. The Illinois map US is detailed enough to help you to find any place in the Illinois. The tourists, students, teachers, and even native of the US use such kind of detailed map of Illinois state US

The US State Illinois occupies 143,795 m², about 1,57 % of the total territory of the USA of 9,148,020 m². The total population of the US State Illinois with 12,802,023 inhabitants (in 2017) has already increased by 3,08 % in this millennium. Almost 40 years ago there were 1,375,505 fewer people. The capital Springfield alone has 114,868 inhabitants.

President Abraham Lincoln spent much of his life in Springfield and you can visit his house there. Chicago was a small town when Springfield became the state capital in 1834 and now it boasts 2.7 million residents.

Following the American Revolutionary War, American settlers began arriving from Kentucky in the 1780s via the Ohio River, and the population grew from south to north. In 1818, Illinois achieved statehood. Following increased commercial activity in the Great Lakes after the construction of the Erie Canal, Chicago was founded in the 1830s on the banks of the Chicago River at one of the few natural harbors on the southern section of Lake Michigan. By 1900, the growth of industrial jobs in the northern cities and coal mining in the central and southern areas attracted immigrants from Eastern and Southern Europe. Illinois was an important manufacturing center during both world wars. The Great Migration from the South established a large community of African Americans in the state, including Chicago, who founded the city's famous jazz and blues cultures. Chicago, the center of the Chicago Metropolitan Area, is now recognized as a global alpha-level city. Illinois's eastern border with Indiana consists of a north-south line at 87° 31′ 30″ west longitude in Lake Michigan at the north, to the Wabash River in the south above Post Vincennes. The Wabash River continues as the eastern/southeastern border with Indiana until the Wabash enters the Ohio River. This marks the beginning of Illinois's southern border with Kentucky, which runs along the northern shoreline of the Ohio River. Though Illinois lies entirely in the Interior Plains, it does have some minor variation in its elevation. In extreme northwestern Illinois, the Driftless Area, a region of unglaciated and therefore higher and more rugged topography, occupies a small part of the state.

Illinois is known under different nicknames; aka Land of Lincoln, or Prairie State, or Corn State, or Garden of the West and detailed official information about Illinois can be found on the homepage at

Poverty and median household income estimates for 2021 in Illinois, IL about 1,493,042 individuals poverty estimate - all ages, it's 12.1% estimated percent of the total resident population of all ages in poverty: U.S. Census Bureau, Small Area Income and Poverty Estimates (SAIPE) Program Release date: December 2022. SNAP is the Supplemental Nutrition Assistance Program, and was formerly known as the Food Stamp Program. Estimated SNAP benefits recipients in Illinois are about 1,940,897 individuals, for July of the reference year 2020. With a estimate of median household income = $72,215 by each individual family, with a 90% confidence interval lower bound of estimate of median household income = $71,645, with a 90% confidence interval upper bound of estimate of median household income = $72,785 in 2021.

The Air Quality index is in Illinois = 43.1. These Air Quality index is based on annual reports from the EPA. Higher values are better (100=best). The number of ozone alert days is used as an indicator of air quality, as are the amounts of seven pollutants including particulates, carbon monoxide, sulfur dioxide, lead, and volatile organic chemicals. The Water Quality Index is 36. A measure of the quality of an area’s water supply as rated by the EPA. Higher values are better (100=best). The EPA has a complex method of measuring the watershed quality, using 15 indicators such as pollutants, turbidity, sediments, and toxic discharges. The Superfund Sites Index is 86. Higher is better (100=best). Based upon the number and impact of EPA Superfund pollution sites in the county, including spending on the cleanup efforts. The UV Index in Illinois = 3.9 and is a measure of an area's exposure to the sun's ultraviolet rays. This is most often a combination of sunny weather, altitude, and latitude. The UV Index has been defined by the WHO ( and is uniform worldwide.

The annual rainfall in Illinois = 37.4 inches and the annual snowfall = 21.7 inches. The annual number of days with measurable precipitation (over .01 inch) = 104. The average number of days per year that are predominantly sunny = 198. 86.6 degrees Fahrenheit is the average daily high temperature for the month of July and 16.6 degrees Fahrenheit is the average daily low temperature for the month of January. The Comfort Index (higher=better) is 42, where higher values mean a more pleasant climate. The Comfort Index measure recognizes that humidity by itself isn't the problem. (Have you noticed nobody ever complains about the weather being 'cold and humid?) It's in the summertime that we notice the humidity the most, when it's hot and muggy. Our Comfort Index uses a combination of afternoon summer temperature and humidity to closely predict the effect that the humidity will have on people.

The most recent state population of 12,812,508 individuals with a median age of 35.9 age the population grows by 4.20% in Illinois population since 2000 and are distributed over a density of 232/sq mi (89.4/km²) - residents per square mile of area.. There are average 2.42 people per household in the 4,787,419 households with an average household income of $65,030 a year. The unemployment rate in Alabama is 10.50% of the available work force and has dropped -4.58% over the most recent 12-month period and the projected change in job supply over the next decade based on migration patterns, economic growth, and other factors will increase by 20.34%. The number of physicians in Illinois per 100,000 population = 210.6.

The percentage of housing units in Illinois which are owned by the occupant = 62.73%. A housing unit is a house, apartment, mobile home, or room occupied as separate living quarters. The average age of homes = 42 years with median home cost = $176,120 and home appreciation of -9.46%. This is the value of the years most recent home sales data. Its important to note that this is not the average (or arithmetic mean). The median home price is the middle value when you arrange all the sales prices of homes from lowest to highest. This is a better indicator than the average, because the median is not changed as much by a few unusually high or low values. The property tax rate of $17.47 shown here is the rate per $1,000 of home value. If for simplification for example the tax rate is $14.00 and the home value is $250,000, the property tax would be $14.00 x ($250,000/1000), or $3500. This is the 'effective' tax rate.

The local school district spends $4,733 per student. There are 16.3 students for each teacher in the school, 982 students for each Librarian and 1065 students for each Counselor. 6.11% of the area’s population over the age of 25 with an Associate Degree or other 2-year college degree, 16.86% with a master’s degree, Ph.D. or other advanced college degree and 9.65% with high school diplomas or high school equivalency degrees (GEDs).

  • Illinois's population of 2,539,891 residents in 1870 has increased 2,66-fold to 12,812,508 residents after 150 years, according to the official 2020 census. U.S. Bureau of the Census beginning in 1900. Data for 1870-1890 are on a de facto or unspecified basis; data for 1900 and later years are resident totals.

    Approximately 50.68% female residents and 49.32% male residents live in Illinois, USA.

    As of 2020, 56.41% in Illinois are married and the remaining 43.59% are single population.

  • 30.6 minutes is the average time that residents in Illinois require for a one-way commute to work. A long commute can have different effects on health. A Gallup poll in the US found that in terms of mental health, long haul commuters are up to 12 percent more likely to experience worry, and ten percent less likely to feel well rested. The Gallup poll also found that of people who commute 61­–90 minutes each day, a whopping one third complained of neck and back pain, compared to less than a quarter of people who only spend ten minutes getting to work.

    73.53% of the working population which commute to work alone in their car, 10.62% of the working population which commutes to work in a carpool, 8.20% of the population that commutes using mass transit, including bus, light rail, subway, and ferry. 3.15% of the population that has their home as their principal place of work.

  • Of the total residential buildings in Illinois, 62.73% are owner-occupied homes, another 8.16% are rented apartments, and the remaining 29.11% are vacant.

  • 53.68% of the population in Illinois who identify themselves as belonging to a religion are distributed among the following most diverse religions.

    Since the 1860s, the two main parties have been the Republican Party (here in 2022 = 36.780%) and the Democratic Party (here in 2022 = 61.920%) of those eligible to vote in Illinois.

Skyline of Illinois

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Landscape of Illinois