Each edition grades its towns against each other only.
More historic than 25% of U.S. towns · #515 of 593 in Indiana. What drives it
Most of Harrison Township was built recently: 9% of its homes predate 1940 and the median home dates from 1992. Below: 10 old photos and papers and maps from 1955 on.
More historic than 25% of U.S. towns, on its age, its old homes and the National Register.
On its age, its old homes and the National Register, Harrison Township is more historic than 25% of U.S. towns, #515 of 593 in Indiana. Its share of homes from before 1940 holds the grade up; its National Register listings pull it down.
Indiana towns list more on the Register than most of the country (a typical Indiana town has 7.9 per 10,000 residents, the U.S. 2.4), so Harrison Township’s 0.0 sits below most of its state (22% of Indiana towns have fewer) while its 0 listings outnumber those of 23% of U.S. towns.
Founding year: our sources. Homes: Census ACS 2020–24. National Register: National Park Service, May 2026 list; each listing counted once (boundary changes and added documentation belong to their listing), and a historic district counts its contributing buildings. How TownRatings grades history →
Wikipedia doesn’t have a history of Harrison Township yet. The photos, dates and memories neighbors add here are how it gets written.
Harrison Township is one of fourteen townships in Dearborn County, Indiana. As of the 2010 census, its population was 3,204 and it contained 1,338 housing units.
Between the 2010 and 2020 censuses its population grew from 3,204 to 3,357 (+5%).
Intro from Wikipedia. Population: U.S. Census Bureau.
Woven from the archive, old maps, post office records, the National Register and the people born here.
One decade in the archive so far: the 1870s. Scroll each row; tap a photo for its story.
1875Atlas of Dearborn County, Indiana - to which is added…Map
1875Atlas of Dearborn County, Indiana - to which is added…Map
1875Atlas of Dearborn County, Indiana - to which is added…Map
1875Atlas of Dearborn County, Indiana - to which is added…Map
1875Atlas of Dearborn County, Indiana - to which is added…Map
1875Atlas of Dearborn County, Indiana - to which is added…Map
1875Atlas of Dearborn County, Indiana - to which is added…Map
1875Atlas of Dearborn County, Indiana - to which is added…Map
1875Atlas of Dearborn County, Indiana - to which is added…Map
1875Atlas of Dearborn County, Indiana - to which is added…MapEvery edition of the U.S. Geological Survey’s map of Harrison Township. Tap a year, or press play to watch the town change.
U.S. Geological Survey historical topographic maps (public domain), via Esri’s collection of the scans. The red ring marks the center of Harrison Township.
Nobody well known was born in Harrison Township itself, so here are the best known from just nearby.
Another post office, Braysville, opened and closed inside today’s town.
US Post Offices dataset (Blevins & Helbock, CC0). Places and cemeteries from the USGS Geographic Names Information System (2021).
Most archives stop around 1920. The photos from after that are in family albums, not libraries.
Each neighbor’s History grade, on the same three inputs.
Harrison Township is more historic than 25% of U.S. towns, #515 of 593 in Indiana. The History grade combines the town’s founding era, the share of homes built before 1940 and its National Register listings. It’s a character grade, so it isn’t part of the overall grade. How it works.
9% of Harrison Township’s homes were built before 1940 (Census estimate, ±3.7 points), against a typical 14% for an Indiana town; the median home was built in 1992.
What the archives can’t tell you, neighbors can.
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).
From Wikimedia Commons (10), U.S. Geological Survey historical maps, 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.
