DeWitt was originally called Marion, and under the latter name was platted in 1836. The present name is for DeWitt Clinton, governor of New York, 1817–1823.
Passages that mention De Witt, cut from the printed page as they were published.
... History of De Witt county, Illinois. With illustrations descriptive of the scenery, and biographical sketches of some of the prominent men and pioneers1882Read the page →
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The village of De Witt as now situated is long and straggling, extending from the original town of Marion north to the railroad, a distance of about three-fourths of a mile. The addition was made by A. C. Jones, August 2.3d, 1871, and described as follows : Commencing at the N. E. corner of the E. i of the S. E. part of section IS, town 20 N. R. 4 E., south on section line 2,646 feet to section corner; westerly on section line 1,240 feet; north 2,646 feet, easterly 1,240 feet except right of way of the G. C.
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... History of De Witt county, Illinois. With illustrations descriptive of the scenery, and biographical sketches of some of the prominent men and pioneers1882 · page 83Read the page →
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St.\te of Illisois, I De Witt County. J ' The grand jurors, chosen, selected, and sworn in and for the county of De Witt, in the name and by the authority of the people of the State of Illinois, upon their odths presen', that one George Clifton, on the first day of September, A. D. 1839, at the county of De Witt and slate aforesaid, one hog of the value of five dollars, (being then and there the property of one B. Lowery,) unlawfully, wilfulh',
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Founding dates: Wikidata, Wikipedia, the U.S. post office records of Blevins & Helbock (CC0) and the Census. Homes by year built: Census ACS 2020–24. National Register of Historic Places: National Park Service (list of May 22, 2026). Old photos, postcards and papers: Wikimedia Commons, the Library of Congress and other public archives, credited on each item’s page. Maps: U.S. Geological Survey historical topographic maps (via Esri) and Sanborn fire-insurance maps (Library of Congress). History text and census tables: Wikipedia (CC BY-SA 4.0). Places that used to be: USGS Geographic Names Information System (2021). How TownRatings grades history →
From Wikipedia, U.S. Geological Survey historical maps, U.S. Census counts (via Wikipedia), the US Post Offices dataset (Blevins & Helbock), the USGS Geographic Names Information System and old county and town histories (Internet Archive). Archive images are copied here with their credits and licenses, shown on each photo’s page. Refreshed monthly.