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–Not graded
History · Sinnott Township

Half of Sinnott Township’s homes were built after 1956

Most of Sinnott Township was built recently: 9% of its homes predate 1940 and the median home dates from 1956.

0on the National Register
9%homes built before 1940
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Quick answers

Where Sinnott Township’s name came from

How did Sinnott Township get its name?

Sinnott Township was organized in 1883, and named for J. P. and P. J. Sinnott, early settlers.

Name: Wikipedia, licensed CC BY-SA 4.0.
Places that used to be

Places now gone and burying grounds

Gone or out of use
Happy Corner SchoolschoolWhalen Schoolschool
1cemetery inside Sinnott Township
Saint Petri

Places and cemeteries from the USGS Geographic Names Information System (2021).

Stories next door

History across the town line

Each neighbor’s History grade, on the same three inputs.

StephenIts storynot graded: under 1,000 residents or part of its townTamarac TownshipIts storynot graded: under 1,000 residents or part of its townDonnelly TownshipIts storynot graded: under 1,000 residents or part of its townDavis TownshipIts storynot graded: under 1,000 residents or part of its townAugsburg TownshipIts storynot graded: under 1,000 residents or part of its town

Questions about Sinnott Township’s history

Memory lane

What the archives can’t tell you, neighbors can.

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Sources

Where this page comes from

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 the USGS Geographic Names Information System. Archive images are copied here with their credits and licenses, shown on each photo’s page. Refreshed monthly.