In the early 19th century, much of what would become the state of Indiana was still frequented by native Indian tribes. The Miami tribe was the most powerful group of Indians in the region, and they were known to visit what would become northern Blackford County. Other tribes that visited the area were the Potawatomi and Delaware. Non-native settlers began arriving in what would become Blackford County during the 1830s. Blackford County was established in 1838 and 1839, as a section of swampland split from the west side of Jay County.
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 (5), Wikipedia and U.S. Geological Survey historical maps. Archive images are copied here with their credits and licenses, shown on each photo’s page. Refreshed monthly.