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History · Interior Township

Interior Township’s post office opened in 1888, and 26% of its homes were built before 1940

Below: maps from 1952 on.

1888first post office
0on the National Register
26%homes built before 1940
Add an old photoShare a memory
Photo: James Phelps from USA · CC BY 2.0
Quick answers

How Interior Township began, and where its name came from

When was Interior Township founded?

1888

The Interior Township post office opened in 1888, the earliest record of the town by name. Three smaller post offices, Interior (1888), Calderwood (1908) and Agate (1926), opened inside today’s town and later closed.

2020 census: 270138 years

How did Interior Township get its name?

Interior Township was named for the Interior Lumber Company.

Founding year: the first Interior Township post office (Blevins & Helbock, CC0). Name: Wikipedia, licensed CC BY-SA 4.0.

What stands out about Interior Township’s past

Read from the archive, the National Register and the record. The page puts what stands out first.

A history waiting to be writtenNo old photos of Interior Township are in the public archives yet. The rest are in attics and albums.Lost villages3 post offices opened and closed inside today’s Interior Township, and 3 old place names are still on the map.
★ What stands out · Help out

Start Interior Township’s collection

The first neighbors to add old photos shape how Interior Township’s history is told.

Decades since 1900 with photos
00s10s20s30s40s50s60s70s80s90s
0 of 10 decades. The empty ones are waiting for someone’s album.
Share a family photoSign in to add one+10
Places that used to be

Lost post offices, old corners, places now gone and burying grounds

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

Interior
1888–1897
Trout Creek
1888–today
Calderwood
1908–1927
Agate
1926–1937
18801950today
Hamlets and corners on the map
AgateCalderwoodTrout Creek
Gone or out of use
Agate Post Officepost officeCalderwood Post Officepost officeTrout Creek Stationlocale
3cemeteries and burying grounds inside Interior Township
AgateInteriorTrout Creek

US Post Offices dataset (Blevins & Helbock, CC0). Places and cemeteries from the USGS Geographic Names Information System (2021).

The story so far

Interior Township, in brief

Wikipedia doesn’t have a history of Interior Township yet. The photos, dates and memories neighbors add here are how it gets written.

Interior Township is a civil township of Ontonagon County in the U.S. state of Michigan. The population was 270 at the 2020 census. It was named for the Interior Lumber Company.

Its first post office opened in 1888. Between the 2010 and 2020 censuses its population fell from 336 to 270 (-20%).

Intro from Wikipedia. Population: U.S. Census Bureau.

Timeline

Interior Township, 1888 to 1952

Woven from the archive, old maps, post office records, the National Register and the people born here.

  1. 19th century
  2. 1888Post officeThe Interior post office opens
  3. 1888Post officeThe Trout Creek post office opens
  4. 1897Post officeThe Interior post office closes
  5. 20th century
  6. 1908Post officeThe Calderwood post office opens
  7. 1927Post officeThe Calderwood post office closes
  8. 1952On the mapFirst mapped by the U.S. Geological Survey
By decade

No old photos in the archives yet

Weddings on Main Street, storms, parades, school pictures, the old store. If it’s in your family album, it belongs here.

Be the first to add onePhotograph a print flat, in daylight, no flash.
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On the map

Interior Township on the map, 1952 to 1999

Every edition of the U.S. Geological Survey’s map of Interior Township. Tap a year, or press play to watch the town change.

Interior Township on the 1952 USGS mapInterior Township on the 1999 USGS map1952Watersmeet 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 Interior Township.

Stories next door

History across the town line

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

Haight TownshipIts storynot graded: under 1,000 residents or part of its townStannard TownshipIts storynot graded: under 1,000 residents or part of its townDuncan TownshipIts storynot graded: under 1,000 residents or part of its townWatersmeet Township1 historic placeB−Iron River Township3 historic placesB+

Questions about Interior Township’s history

What year was Interior Township founded?

The Interior Township post office opened in 1888, the earliest record of the town by name (U.S. post office records).

Memory lane

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

Town Square →
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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 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.