Wikipedia doesn’t have a history of Harmony Township yet. The photos, dates and memories neighbors add here are how it gets written.
Harmony Township is one of six townships in Union County, Indiana, United States. As of the 2020 census, its population was 527 and it contained 286 housing units.
Between the 2010 and 2020 censuses its population fell from 543 to 527 (-3%).
Intro from Wikipedia. Population: U.S. Census Bureau.
Timeline
Harmony Township, 1866 to 1948
Woven from the archive, old maps, post office records, the National Register and the people born here.
Every edition of the U.S. Geological Survey’s map of Harmony Township. Tap a year, or press play to watch the town change.
1948Fairfield sheet · 1:24,000
U.S. Geological Survey historical topographic maps (public domain), via Esri’s collection of the scans. The red ring marks the center of Harmony Township.
People over time
Harmony Township, census by census
Between 335 and 628 people in every census since 1890.
14 censuses, 1890–2020.
U.S. Census Bureau decennial counts, from the census table on Harmony Township’s Wikipedia page.
Famous people
Famous people close to Harmony Township
Nobody well known was born in Harmony Township itself, so here are the best known from just nearby.
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 U.S. Geological Survey historical maps, U.S. Census counts (via 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.