Hillsboro’s post office opened in 1837, and 1 of its places is on the National Register
Most of Hillsboro was built recently: 0.0% of its homes predate 1940 and the median home dates from 1982. Its Register listing is the Hillsboro Methodist Church and Cemetery.
Hillsboro is named for its location on a hill above the surrounding area. The community was formed in 1835 and was the county seat of Scott County from 1836 to 1856. Hillsboro formerly had a newspaper, The Argus.
In 1900 Hillsboro had a population of 112, two churches, and four stores.
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 the National Register of Historic Places (1), Wikipedia, Wikidata and Wikipedia for famous people, 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.