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History · Iosco Township

Iosco Township’s post office opened in 1856, and 30% of its homes were built before 1940

1856first post office
0on the National Register
30%homes built before 1940
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Quick answers

How Iosco Township began

When was Iosco Township founded?

1856

The Iosco Township post office opened in 1856, the earliest record of the town by name. Two smaller post offices, Iosco (1856) and Palmer (1895), opened inside today’s town and later closed.

2020 census: 509170 years
Founding year: the first Iosco Township post office (Blevins & Helbock, CC0).

What stands out about Iosco 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 Iosco Township are in the public archives yet. The rest are in attics and albums.Lost villages2 post offices opened and closed inside today’s Iosco Township, and 1 old place names are still on the map.
★ What stands out · Help out

Start Iosco Township’s collection

The first neighbors to add old photos shape how Iosco 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

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

Iosco
1856–1860
Palmer
1895–1901
18501940today
Hamlets and corners on the map
Palmer
Gone or out of use
Palmer Post Officepost office
6cemeteries and burying grounds inside Iosco Township
EbenezerIoscoMinskePommeransSaint JarlathSaint Johns

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

The story so far

Iosco Township, in brief

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

Iosco Township is a township in Waseca County, Minnesota, United States. The population was 509 at the 2020 census. Iosco Township was organized in 1858.

Its first post office opened in 1856. Between the 2010 and 2020 censuses its population fell from 550 to 509 (-7%).

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

Timeline

Iosco Township, 1856 to 1901

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

  1. 19th century
  2. 1856Post officeThe Iosco post office opens
  3. 1860Post officeThe Iosco post office closes
  4. 1895Post officeThe Palmer post office opens
  5. 20th century
  6. 1901Post officeThe Palmer 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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Stories next door

History across the town line

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

St. Mary TownshipIts storynot graded: under 1,000 residents or part of its townJanesville Township2 historic placesnot graded: under 1,000 residents or part of its townWaterville TownshipIts storynot graded: under 1,000 residents or part of its townBlooming Grove TownshipIts storynot graded: under 1,000 residents or part of its town

Questions about Iosco Township’s history

What year was Iosco Township founded?

The Iosco Township post office opened in 1856, 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 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.