A post office was opened in Wilmington in 1857 and a stone church and school opened in 1870. Wilmington initially hosted 30 houses, two stores, a blacksmith, two doctors, a wagon shop and a hotel. The town met its demise when the Manhattan, Burlingame & Alma Railroad was built through Harveyville. Shortly after many businesses moved away and the population dwindled. The post office closed in 1906 and by 1910 the population had fallen to 69. The school closed in 1950, but still stands today.
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, the US Post Offices dataset (Blevins & Helbock) and the USGS Geographic Names Information System. Archive images are copied here with their credits and licenses, shown on each photo’s page. Refreshed monthly.