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–Not graded
History · Sinclair Township

Half of Sinclair Township’s homes were built after 1981

Most of Sinclair Township was built recently: 9% of its homes predate 1940 and the median home dates from 1981.

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

Where Sinclair Township’s name came from

How did Sinclair Township get its name?

Sinclair Township was named for a government surveyor.

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

Lost post offices, places now gone and burying grounds

Two other post offices opened and closed inside today’s town.

Neving
1900–1920
Starlight
1903–1907
19001960today
Gone or out of use
Neving Post Officepost officeStarlight Post Officepost office
3cemeteries and burying grounds inside Sinclair Township
East Seljord Or WestbySeljord Lutheran ChurchSinclair

US Post Offices dataset (Blevins & Helbock, CC0). 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.

Leon TownshipIts storynot graded: under 1,000 residents or part of its townClover TownshipIts storynot graded: under 1,000 residents or part of its townRoosevelt Township1 historic placenot graded: under 1,000 residents or part of its townDudley TownshipIts storynot graded: under 1,000 residents or part of its town

Questions about Sinclair 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 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.