The city was named for Henry Dearborn, Revolutionary War general and Secretary of War, and was incorporated in 1882.
From 1913 to 1933, Dearborn was one of the stops along the Kansas City, Clay County and St. Joseph Railway (KCCC&SJ), an interurban light rail line connecting Kansas City and St. Joseph. Portions of the right-of-way and roadbed are still visible from Dearborn north to St. Joseph.
In November 2012, one of two winning tickets for a then record-breaking $587.5 million Powerball jackpot was purchased at the Trex Mart gas station in Dearborn.
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 Wikimedia Commons (2), Wikipedia, Wikidata and Wikipedia for famous people, 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 Sanborn fire insurance maps (Library of Congress). Archive images are copied here with their credits and licenses, shown on each photo’s page. Refreshed monthly.