Population of Illinois (State)
Map of Population by County in Illinois
Population by Place in Illinois
There are 1,368 places in Illinois. This section compares the 50 most populous of those to each other. The least populous of the compared places has a population of 37,567.Population by Metro Area in Illinois
There are 33 metro areas that are fully or partially contained within Illinois (25 fully and 8 partially). This section compares all 33 of those to each other.Population by County in Illinois
There are 102 counties in Illinois. This section compares the 50 most populous of those to each other. The least populous of the compared counties has a population of 29,301.Population by County Subdivision in Illinois
There are 1,710 county subdivisions in Illinois. This section compares the 50 most populous of those to each other. The least populous of the compared county subdivisions has a population of 54,812.Population by State in the United States
There are 50 states in the United States. This section compares Illinois to all of the states in the United States.Population by State in the Midwest
There are 12 states in the Midwest. This section compares Illinois to all of the states in the Midwest.Definitions
This page reports on the population distribution in Illinois, both in terms of raw head counts, and in terms of population density per square mile.
- Population: count of all residents of the given entity at the time of the survey, excluding visitors
- Population Density: population divided by the total land area of the entity (i.e., excluding water areas contained in the entity)
For additional information about the data presented on this site, including our sources, please see the About Page.
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Major Counties:
Counties:
Adams, Alexander, Bond, Boone, Brown, Bureau, Calhoun, Carroll, Cass, Champaign, Christian, Clark, Clay, Clinton, Coles, Cook, Crawford, Cumberland, De Witt, DeKalb, 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, Winnebago, Woodford
Metro Areas:
Bloomington Area, Burlington Area, Canton Area, Cape Girardeau Area, Carbondale Area, Centralia Area, Champaign Area, Charleston Area, Chicago Area, Danville Area, Davenport Area, Decatur Area, Dixon Area, Effingham Area, Fort Madison Area, Freeport Area, Galesburg Area, Jacksonville Area, Kankakee Area, Lincoln Area, Macomb Area, Mount Vernon Area, Ottawa Area, Paducah Area, Peoria Area, Pontiac Area, Quincy Area, Rochelle Area, Rockford Area, Springfield Area, St. Louis Area, Sterling Area, Taylorville Area
Major Cities:
Major Villages:
Congressional Districts:
State House Districts:
IL-1, IL-2, IL-3, IL-4, IL-5, IL-6, IL-7, IL-8, IL-9, IL-10, IL-11, IL-12, IL-13, IL-14, IL-15, IL-16, IL-17, IL-18, IL-19, IL-20, IL-21, IL-22, IL-23, IL-24, IL-25, IL-26, IL-27, IL-28, IL-29, IL-30, IL-31, IL-32, IL-33, IL-34, IL-35, IL-36, IL-37, IL-38, IL-39, IL-40, IL-41, IL-42, IL-43, IL-44, IL-45, IL-46, IL-47, IL-48, IL-49, IL-50, IL-51, IL-52, IL-53, IL-54, IL-55, IL-56, IL-57, IL-58, IL-59, IL-60, IL-61, IL-62, IL-63, IL-64, IL-65, IL-66, IL-67, IL-68, IL-69, IL-70, IL-71, IL-72, IL-73, IL-74, IL-75, IL-76, IL-77, IL-78, IL-79, IL-80, IL-81, IL-82, IL-83, IL-84, IL-85, IL-86, IL-87, IL-88, IL-89, IL-90, IL-91, IL-92, IL-93, IL-94, IL-95, IL-96, IL-97, IL-98, IL-99, IL-100, IL-101, IL-102, IL-103, IL-104, IL-105, IL-106, IL-107, IL-108, IL-109, IL-110, IL-111, IL-112, IL-113, IL-114, IL-115, IL-116, IL-117, IL-118
State Senate Districts:
IL-1, IL-2, IL-3, IL-4, IL-5, IL-6, IL-7, IL-8, IL-9, IL-10, IL-11, IL-12, IL-13, IL-14, IL-15, IL-16, IL-17, IL-18, IL-19, IL-20, IL-21, IL-22, IL-23, IL-24, IL-25, IL-26, IL-27, IL-28, IL-29, IL-30, IL-31, IL-32, IL-33, IL-34, IL-35, IL-36, IL-37, IL-38, IL-39, IL-40, IL-41, IL-42, IL-43, IL-44, IL-45, IL-46, IL-47, IL-48, IL-49, IL-50, IL-51, IL-52, IL-53, IL-54, IL-55, IL-56, IL-57, IL-58, IL-59