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Springfield is the capital city of the U.S. state of Illinois and the seat of Sangamon County.The city's population was 114,394 at the 2020 census, which makes it the state's seventh-most populous city, [10] the second-most populous outside of the Chicago metropolitan area (after Rockford), and the most populous in Central Illinois.
The Springfield Metropolitan Statistical Area, as defined by the United States Census Bureau, is an area consisting of two counties in Central Illinois, anchored by the city of Springfield. As of the 2000 census , the MSA had a population of 201,437 (though a July 1, 2009 estimate placed the population at 208,182).
Sangamon County is a county located near the center of the U.S. state of Illinois. According to the 2020 census, it had a population of 196,343. [1] Its county seat and largest city is Springfield, [2] the state capital. Sangamon County is included in the Springfield, IL Metropolitan Statistical Area.
The Office of Management and Budget (OMB) has designated more than 1,000 statistical areas for the United States and Puerto Rico. [2] These statistical areas are important geographic delineations of population clusters used by the OMB, the United States Census Bureau, planning organizations, and federal, state, and local government entities.
Illinois's FIPS state code is 17 and its postal abbreviation is IL. What is now Illinois was claimed as part of Illinois County, Virginia, between 1778 and 1782. Modern-day county formation dates to 1790 when the area was part of the Northwest Territory; two counties—St. Clair and Knox—were created at that time.
A total of 45 counties are typically considered to be within Central Illinois, with a population of 1,874,635 as of the 2020 U.S. Census. Major cities include Peoria, Springfield (the state capital), Decatur, Quincy, Champaign–Urbana, Bloomington–Normal, Galesburg, and Danville. [1]
The Black population of Springfield had been growing by about 4% annually, and by 1908, roughly 2,500 Black people were living there to work in the city’s manufacturing plants.
This is an accepted version of this page This is the latest accepted revision, reviewed on 25 December 2024. "Cities in Illinois" redirects here. For unincorporated communities, see List of unincorporated communities in Illinois. For CDPs, see List of census-designated places in Illinois. Map of the United States with Illinois highlighted Illinois is a state located in the Midwestern United ...