Marlboro was laid out in 1827, taking its name from Marlboro Township. The community was originally built up chiefly by Quakers. By 1833, Marlborough had about 50 inhabitants. A post office called Marlborough was established in 1833, the name was changed to Marlboro in 1893, and the post office closed in 1906.
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 →
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