US Post Offices dataset (Blevins & Helbock, CC0). Places and cemeteries from the USGS Geographic Names Information System (2021).
The story so far
Harrison Township, in brief
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 a township in Mercer County, in the U.S. state of Missouri. Harrison Township was established in 1843, and most likely named in honor of William Henry Harrison, 9th President of the United States.
Between the 2010 and 2020 censuses its population fell from 226 to 220 (-3%).
Intro from Wikipedia. Population: U.S. Census Bureau.
Timeline
Harrison Township, 1850 to 1946
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 Harrison Township. Tap a year, or press play to watch the town change.
1946Princeton sheet · 1:62,500
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.
Stories next door
History across the town line
Each neighbor’s History grade, on the same three inputs.
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, 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.