Map of Illinois

The state of Illinois is located in the Midwestern region of the United States. It is bordered by Wisconsin to the north, Iowa and Missouri to the west, Kentucky to the east and south, and Indiana to the east. Illinois also has a water border along Lake Michigan with the state of Michigan.

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About the map:

This map of Illinois State shows the state borders, states, state capital, Lake Michigan, county borders, counties, county seats and important cities.

County seats are indicated by a red circle, white circles indicate cities, and the capital of Illinois is indicated by a star in the red circle. The larger the city in terms of population, the larger the circle on the map and the larger the font of the city name.

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Illinois Official Highway Map PDF

Key Facts:

The Great Seal of the State of Illinois	Flag of Illinois
Capital:	Springfield
Largest city:	Chicago
Largest metropolitan area:	Chicagoland
Largest county by population:	Cook County
Largest county by area:	McLean County
Area:	57,915 sq mi (149,997 km2)
Population (2020):	12,812,508[1]
Density:	232/sq mi (89.4/km2)
Dimensions:	Length 390 mi (628 km) Width 210 mi (338 km)
Latitude:	36°58′ N to 42°30′ N
Longitude:	87°30′ W to 91°31′ W
Elevation:	Highest elevation (Charles Mound) - 1,235 ft (376.4 m) Lowest elevation (Confluence of Mississippi River and Ohio River) - 280 ft (85 m)
Official language:	English
Spoken language (2022):	English - 76.1% Spanish - 13.8% Other - 10.1%
Religion (2014):[2]	43% - Protestantism 28% - Catholicism 22% - No religion 2% - Judaism 1% - Islam 1% - Buddhism 1% - Hinduism 1% - Other religion
Racial/ethnic groups (2020):[3]	58.32% White 18.24% Hispanic or Latino 13.86% Black or African American 5.83% Asian 3.24% Two or more races 0.35% Some Other Race 0.13% Native American or Alaska Native 0.02% Pacific Islander
Median household income (2023):	$87,820[4]
USPS abbreviation:	IL
ISO 3166 code:	US-IL
Time zone:	UTC−06:00 (CST) Summer (DST) UTC−05:00 (CDT)
The Official Website of the State of Illinois:	www.illinois.gov

About the State of Illinois

Illinois, located in the Midwestern United States, is bordered by Indiana to the east, Wisconsin to the north, Missouri and Iowa to the west, and Kentucky to the south. The state's geography is diverse, with Lake Michigan forming the northeastern border and the Mississippi River forming the western border. Illinois has an area of approximately 57,914 square miles, making it the 25th largest state in the United States.

Where is the state of Illinois in the United States of America?

Springfield, the capital of Illinois, is located in the central part of the state. It has historical significance as the site of President Abraham Lincoln's longtime residence, and is home to many sites honoring his legacy, including the Abraham Lincoln Presidential Library and Museum. Springfield also functions as a government center, housing the Illinois General Assembly and various state offices.

Chicago, the largest city in Illinois, is the third most populous city in the United States. As a major financial, cultural, and transportation center, Chicago boasts architectural landmarks such as Willis Tower and the John Hancock Center. The city is home to world-class institutions such as the Art Institute of Chicago, the Field Museum, and the Chicago Symphony Orchestra. Chicago's economy thrives through a variety of sectors including finance, technology, manufacturing, and transportation.

Other significant cities in Illinois include Aurora, Rockford, and Naperville. Aurora, the second largest city, serves as a manufacturing and distribution center. Rockford, located in the northern part of the state, is known for its contributions to the aerospace and manufacturing industries. Naperville, part of the Chicago metropolitan area, is consistently ranked among the nation's most livable cities due to its high quality of life and strong economy.

Illinois plays an important role in the national economy, with agriculture, manufacturing, and services as key industries. The state grows corn and soybeans in abundance, contributing significantly to the nation's agricultural production. Illinois also has a strong transportation network, with major highways, railroads, and airports facilitating commerce and travel.

Overall, Illinois stands out for its strategic location, historical significance, and economic diversity.

Major cities in Illinois

• Chicago
• Aurora
• Joliet
• Naperville
• Rockford

• Elgin
• Springfield
• Peoria
• Waukegan
• Champaign

• Cicero
• Schaumburg
• Bloomington
• Evanston
• Arlington Heights

• Bolingbrook
• Decatur
• Palatine
• Skokie
• Des Plaines

Counties in Illinois

There are 102 counties in the U.S. state of Illinois.

List of counties in Illinois

Illinois County Map

Geography of Illinois

Illinois, located in the Midwestern United States, is characterized by a variety of geographic landscapes. Covering an area of approximately 57,914 square miles, the state has a varied topography of flat plains, rolling hills, and river valleys. The northern boundary of the state is defined by Lake Michigan and the western boundary by the Mississippi River. The Illinois River, an important tributary of the Mississippi, crosses the state, providing important water resources and transportation routes.

The state is divided into three major geographic regions, Northern Illinois, Central Illinois, and Southern Illinois. Characterized by its proximity to the Great Lakes, Northern Illinois includes the urban expanse of Chicago and its surrounding suburbs. Central Illinois consists mostly of fertile plains, making it a key region for agriculture, especially corn and soybean production. Southern Illinois, often referred to as Little Egypt has a more diverse topography with rolling hills and forests, influenced by the confluence of the Mississippi and Ohio Rivers.

Illinois has a continental climate with pronounced seasonal variations. Winters are cold and often snowy, especially in northern regions where temperatures can drop significantly. Summers are hot and humid, with temperatures often rising above 90°F (32°C). Spring and fall are milder and more temperate, but they too can bring severe weather, including thunderstorms and tornadoes, especially in the central and southern parts of the state.

The diverse landscapes and climatic conditions influence the lifestyles and economic characteristics of the state's residents, contributing to its identity within the broader Midwest region.

Below you will find a list of the largest lakes and the longest rivers in Illinois.

Major Rivers in Illinois

Major Lakes in Illinois

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References

1. ^ "2020 Census Apportionment Results". United States Census Bureau.
2. ^ "Religion in America: U.S. Religious Data, Demographics and Statistics". Pew Research Center.
3. ^ "P2 HISPANIC OR LATINO, AND NOT HISPANIC OR LATINO BY RACE - 2020. United States Census Bureau.
4. ^ Median household income in Illinois.