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History · Third River Township

18% of Third River Township’s homes were built before 1940

Below: maps from 1919 on.

0on the National Register
18%homes built before 1940
1famous people
Add an old photoShare a memory

What stands out about Third River 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 Third River Township are in the public archives yet. The rest are in attics and albums.On the map since 19193 editions of the USGS map, 1919 to 1996. Watch Third River Township change.
★ What stands out · Help out

Start Third River Township’s collection

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

Decades since 1900 with photos
00s10s20s30s40s50s60s70s80s90s
0 of 10 decades. The empty ones are waiting for someone’s album.
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On the map

Third River Township on the map, 1919 to 1996

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

Third River Township on the 1919 USGS mapThird River Township on the 1971 USGS mapThird River Township on the 1996 USGS map1919Rosy 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 Third River Township.

The story so far

Third River Township, in brief

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

Third River Township is a township in Itasca County, Minnesota, United States. The population was 50 at the 2020 census. This township took its name from the Third River.

Its population held steady between the last two censuses: 50 in 2010, 50 in 2020.

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

Timeline

Third River Township, 1901 to 1935

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

  1. 20th century
  2. 1901Post officeThe Rosy post office opens
  3. 1919On the mapFirst mapped by the U.S. Geological Survey
  4. 1934Born hereWayne Bock is born here
  5. 1935Post officeThe Rosy post office closes
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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Places that used to be

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

Another post office, Rosy, opened and closed inside today’s town.

Hamlets and corners on the map
Rosy
Gone or out of use
RosylocaleRosy Post Officepost office
1cemetery inside Third River Township
Rosy

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.

Moose Park TownshipIts storynot graded: under 1,000 residents or part of its townBirch TownshipIts storynot graded: under 1,000 residents or part of its townGood Hope TownshipIts storynot graded: under 1,000 residents or part of its town

Questions about Third River Township’s history

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 Wikidata and Wikipedia for famous people, 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.