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History · Senachwine Township

1 of Senachwine Township’s places is on the National Register

Its Register listing is the Cortland Condit House. Most of Senachwine Township was built recently: 7% of its homes predate 1940 and the median home dates from 2001. Below: maps from 1893 on.

1on the National Register
7%homes built before 1940
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What stands out about Senachwine 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 Senachwine Township are in the public archives yet. The rest are in attics and albums.On the map since 18933 editions of the USGS map, 1893 to 1972. Watch Senachwine Township change.Lost villages1 post office opened and closed inside today’s Senachwine Township, and 4 old place names are still on the map.
★ What stands out · Help out

Start Senachwine Township’s collection

The first neighbors to add old photos shape how Senachwine 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

Senachwine Township on the map, 1893 to 1972

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

Senachwine Township on the 1893 USGS mapSenachwine Township on the 1933 USGS mapSenachwine Township on the 1972 USGS map1893Lacon 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 Senachwine Township.

Places that used to be

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

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

Snachwine
1857–1881
Putnam
1867–today
18501940today
Hamlets and corners on the map
Indian SpringPutnamUndercliffWalnut Grove
Gone or out of use
Bachman SchoolschoolEdgar Read AirportairportHenkins SchoolschoolLittle Sister Seaplane BaseairportSalem Churchchurch
3cemeteries and burying grounds inside Senachwine Township
PutnamPutnamSaint Joseph

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

The story so far

Senachwine Township, in brief

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

Senachwine Township is located in Putnam County, Illinois. As of the 2010 census, its population was 745 and it contained 651 housing units. Senachwine is named for an Indian chief whose hunting grounds and home were located in the township.

Between the 2010 and 2020 censuses its population fell from 745 to 616 (-17%).

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

Timeline

Senachwine Township, 1857 to 1893

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

  1. 19th century
  2. 1857Post officeThe Snachwine post office opens
  3. 1867Post officeThe Putnam post office opens
  4. 1881Post officeThe Snachwine post office closes
  5. 1893On 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.

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On the National Register

1 historic place in Senachwine Township

The country’s official list of buildings and places worth saving.

place listed
1
National Historic Landmarks
0
none yet
historic buildings protected
1
each building in a district counts
first listed
1983
Cortland Condit House
Cortland Condit House
Buildings

Architectural styles listings

Greek Revival1
Cortland Condit HouseGreek Revival

National Park Service, National Register of Historic Places. Photos from Wikimedia Commons, credited on each place’s page.

Famous people

Famous people close to Senachwine Township

Nobody well known was born in Senachwine Township itself, so here are the best known from just nearby.

See all →
C
Charles Torrey SimpsonAmerican botanist, malacologist, and conservati… · b. 1846
Red RuffingAmerican baseball player and coach · b. 1905
Charles Atwood KofoidAmerican zoologist · b. 1865
B
Bertha Marion LahmanAmerican botanist · b. 1872
Warren Crandall GilesAmerican baseball executive · b. 1896
Ernani BernardiAmerican musician · b. 1911
Stories next door

History across the town line

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

Hennepin Township2 historic placesA−Henry TownshipIts storynot graded: under 1,000 residents or part of its townWheatland Township1 historic placenot graded: under 1,000 residents or part of its townLeepertown TownshipIts storynot graded: under 1,000 residents or part of its town

Questions about Senachwine Township’s history

What is on the National Register in Senachwine Township?

One place: the Cortland Condit House (listed 1983).

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 (1), the National Register of Historic Places (1), 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.