US Post Offices dataset (Blevins & Helbock, CC0). Places and cemeteries from the USGS Geographic Names Information System (2021).
The story so far
Gill Township, in brief
Wikipedia doesn’t have a history of Gill Township yet. The photos, dates and memories neighbors add here are how it gets written.
Gill Township is one of nine townships in Sullivan County, Indiana, United States. As of the 2020 census, its population was 823 and it contained 361 housing units.
Between the 2010 and 2020 censuses its population fell from 871 to 823 (-6%).
Intro from Wikipedia. Population: U.S. Census Bureau.
Timeline
Gill Township, 1840 to 1966
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 Gill Township. Tap a year, or press play to watch the town change.
1943Merom 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 Gill Township.
On the National Register
3 historic places in Gill Township
The country’s official list of buildings and places worth saving.
places listed
3
National Historic Landmarks
0
none yet
historic buildings protected
3
each building in a district counts
National Park Service, National Register of Historic Places. Photos from Wikimedia Commons, credited on each place’s page.
People over time
Gill Township, census by census
Between 823 and 2,598 people in every census since 1890.
14 censuses, 1890–2020.
U.S. Census Bureau decennial counts, from the census table on Gill Township’s Wikipedia page.
Famous people
Famous people close to Gill Township
Nobody well known was born in Gill 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.