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History · Deerfield Township

17% of Deerfield Township’s homes were built before 1940

Its Register listing is the Helmick Mill Covered Bridge. Below: old-book passages.

1on the National Register
17%homes built before 1940

What stands out about Deerfield 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 Deerfield Township’s collection

The first neighbors to add old photos shape how Deerfield 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, places now gone and burying grounds

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

Halls Valley
1838–1899
Triadelphia
1849–1930
18301930today
Hamlets and corners on the map
Halls ValleyTriadelphia
Gone or out of use
Halls Valley Post Officepost officeLemon Hill SchoolschoolLemon Hill United Brethren ChurchchurchLocust Grove Methodist ChurchchurchTriadelphia Post Officepost officeTriadelphia Schoolschool
3cemeteries and burying grounds inside Deerfield Township
DeerfieldLemon HillLocust Grove

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

The story so far

Deerfield Township, in brief

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

Deerfield Township is one of the fourteen townships of Morgan County, Ohio, United States. The 2020 census found 839 people in the township.

Between the 2010 and 2020 censuses its population fell from 927 to 839 (-9%).

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

From the old history books

What they wrote about Deerfield Township in 1886

Passages that mention Deerfield Township, cut from the printed page as they were published.

Isaac Whitaker was one of the early pioneers of Deerfield Township. He was born in Maryland in 1789, and in 1803 came to Zanesville, Ohio. He served his country as a soldier in the war of 1812, and in 1816 came to Morgan County with his family of wife and one child and settled in Deerfield Township.
History of Morgan County, Ohio1886 · page 456Read the page →
Read the text

Isaac Whitaker was one of the early pioneers of Deerfield Township. He was born in Maryland in 1789, and in 1803 came to Zanesville, Ohio. He served his country as a soldier in the war of 1812, and in 1816 came to Morgan County with his family of wife and one child and settled in Deerfield Township.

Text read by machine from the scan; it may contain errors.

Scans and text from the Internet Archive. Books published in 1930 or earlier, which are in the public domain.

Timeline

Deerfield Township, 1838 to 1930

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

  1. 19th century
  2. 1838Post officeThe Halls Valley post office opens
  3. 1849Post officeThe Triadelphia post office opens
  4. 1899Post officeThe Halls Valley post office closes
  5. 20th century
  6. 1930Post officeThe Triadelphia post office closes
By decade

Deerfield Township, decade by decade

On the National Register

1 historic place in Deerfield 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
1999
Helmick Mill Covered Bridge

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

Famous people

Famous people close to Deerfield Township

Nobody well known was born in Deerfield 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 Deerfield Township’s history

What is on the National Register in Deerfield Township?

One place: the Helmick Mill Covered Bridge (listed 1999).

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). How TownRatings grades history →

From Wikimedia Commons (2), Wikidata (1), the National Register of Historic Places (1), the US Post Offices dataset (Blevins & Helbock), the USGS Geographic Names Information System and old county and town histories (Internet Archive). Archive images are copied here with their credits and licenses, shown on each photo’s page. Refreshed monthly.