Editing Centralia, Illinois (section)

==Geography==
Centralia is located approximately {{convert|60|mi}} east of [[St. Louis|St. Louis, Missouri]]. Most of the city, including its downtown, is in southwestern Marion County, but the city extends west into Clinton County and south {{convert|5|mi|0}} into Washington and Jefferson counties. The city is {{convert|10|mi}} north of exit 61 of [[Interstate 64]] and {{convert|9|mi|0}} west of exit 109 of [[Interstate 57]]. Centralia is one of three Illinois cities with portions in four counties, the others being [[Barrington Hills, Illinois|Barrington Hills]] and [[Aurora, Illinois|Aurora]]. Because of its unique location within multiple counties, portions of Centralia are associated with different [[Core Based Statistical Area]]s (CBSAs). The Centralia [[Micropolitan Statistical Area]] includes all of Marion County. The Clinton County portion of the city is considered part of the [[St. Louis]], [[Missouri|MO]]–IL [[Greater St. Louis|Metropolitan Statistical Area]], while the Jefferson County portion lies within the [[Mount Vernon, Illinois|Mt. Vernon]] [[Mount Vernon, Illinois micropolitan area|Micropolitan Statistical Area]]. The portion of Centralia in Washington County is not considered part of any metropolitan or micropolitan area.

According to the 2021 census gazetteer files, Centralia has a total area of {{convert|9.23|sqmi|km2|2}}, of which {{convert|8.20|sqmi|km2|2}} (or 88.81%) is land and {{convert|1.03|sqmi|km2|2}} (or 11.19%) is water.<ref name="gaz2021">{{Cite web   |title=Gazetteer Files |url=https://www.census.gov/geographies/reference-files/time-series/geo/gazetteer-files.html |access-date=2022-06-29 |website=Census.gov}}</ref>