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DHistory
History · Union Township

Half of Union Township’s homes were built after 2004

More historic than 10% of U.S. towns · #587 of 593 in Indiana. What drives it

Most of Union Township was built recently: 2% of its homes predate 1940 and the median home dates from 2004. Below: maps from 1938 on.

0on the National Register
2%homes built before 1940
Quick answers

About Union Township’s history

How historic is Union Township?

D

More historic than 10% of U.S. towns, on its age, its old homes and the National Register.

What drives the grade ↓
History grade

What drives Union Township’s History grade

On its age, its old homes and the National Register, Union Township is more historic than 10% of U.S. towns, #587 of 593 in Indiana. Its National Register listings hold the grade up; its share of homes from before 1940 pulls it down.

D
HistoryA character grade: shown, never part of Union Township’s overall grade.
All U.S. towns we grade (21,289)Ahead of 10%
NewerOlder
Indiana towns of 2,500+ (593)#587 of 593

Indiana towns list more on the Register than most of the country (a typical Indiana town has 7.9 per 10,000 residents, the U.S. 2.4), so Union Township’s 0.0 sits below most of its state (22% of Indiana towns have fewer) while its 0 listings outnumber those of 23% of U.S. towns.

How sure. Graded on two of the three inputs, so a change in either one moves the letter more than it would with three. The pre-1940 share (±1.9 points) is firm at this size.

Founding year: our sources. Homes: Census ACS 2020–24. National Register: National Park Service, May 2026 list; each listing counted once (boundary changes and added documentation belong to their listing), and a historic district counts its contributing buildings. How TownRatings grades history →

What stands out about Union Township’s past

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

★ What stands out · Help out

Start Union Township’s collection

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

Decades since 1900 with photos
00s10s20s30s40s50s60s70s80s90s
0 of 10 decades. The empty ones are waiting for someone’s album.
Places that used to be

Lost post offices, old corners and burying grounds

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

Sylvan Grove
1849–1862
Memphis
1854–today
Slate Cut
1858–1891
18401930today
Hamlets and corners on the map
MemphisPerry CrossingSlatecutSylvan Grove
1cemetery inside Union Township
Bowery

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

The story

How Union Township came to be

From Wikipedia’s history of Union Township.

Read it all →

Union Township was organized in 1858. Its name was given from the fact that this township was created through the merger or "union" of land given by three neighboring townships.

Text from Wikipedia, licensed CC BY-SA 4.0.

Timeline

Union Township, 1849 to 1938

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

  1. 19th century
  2. 1849Post officeThe Sylvan Grove post office opens
  3. 1854Post officeThe Memphis post office opens
  4. 1858Post officeThe Slate Cut post office opens
  5. 1862Post officeThe Sylvan Grove post office closes
  6. 1891Post officeThe Slate Cut post office closes
  7. 20th century
  8. 1938On 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.
Add from your album
On the map

Union Township on the map, 1938 to 1980

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

Union Township on the 1938 USGS mapUnion Township on the 1947 USGS mapUnion Township on the 1957 USGS mapUnion Township on the 1963 USGS mapUnion Township on the 1980 USGS map1938Speed sheet · 1:24,000

U.S. Geological Survey historical topographic maps (public domain), via Esri’s collection of the scans. The red ring marks the center of Union Township.

Famous people

Famous people close to Union Township

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

See all →
Stories next door

History across the town line

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

Questions about Union Township’s history

How does Union Township rank for history?

Union Township is more historic than 10% of U.S. towns, #587 of 593 in Indiana. The History grade combines the town’s founding era, the share of homes built before 1940 and its National Register listings. It’s a character grade, so it isn’t part of the overall grade. How it works.

How old are the homes in Union Township?

2% of Union Township’s homes were built before 1940 (Census estimate, ±1.9 points), against a typical 14% for an Indiana town; the median home was built in 2004.

Memory lane

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

Town Square →
Start a conversation
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).

From Wikipedia, 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.