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History · Dietrich

Dietrich’s post office opened in 1909, and 1 of its places is on the National Register

Most of Dietrich was built recently: 10% of its homes predate 1940 and the median home dates from 1990. Its Register listing is the Paul, Denton J., Water Tank.

1909first post office
1on the National Register
10%homes built before 1940
Quick answers

How Dietrich began

When was Dietrich founded?

1909

The Dietrich post office opened in 1909, the earliest record of the town by name.

2020 census: 284117 years
Founding year: the first Dietrich post office (Blevins & Helbock, CC0).

What stands out about Dietrich’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 Dietrich’s collection

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

Decades since 1900 with photos
00s10s20s30s40s50s60s70s80s90s
0 of 10 decades. The empty ones are waiting for someone’s album.
The story so far

Dietrich, in brief

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

Dietrich is a city in Lincoln County, Idaho, United States. The population was 284 at the 2020 census.

Its first post office opened in 1909. Between the 2010 and 2020 censuses its population fell from 332 to 284 (-14%).

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

Timeline

Dietrich, 1909 to 1972

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

  1. 20th century
  2. 1909Post officeThe Dietrich post office opens
  3. 1918BuiltPaul, Denton J., Water Tank is built
  4. 1972Post officeThe Dietrich post office closes
By decade

Dietrich, decade by decade

On the National Register

1 historic place in Dietrich

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
Paul, Denton J., Water Tank
Buildings

Architectural styles listings

Vernacular1

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

Famous people

Famous people close to Dietrich

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

See all →
Places that used to be

Lost post offices

Dietrich had its own post office from 1909 to 1972.

Dietrich
1909–1972
19001960today

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

Questions about Dietrich’s history

What year was Dietrich founded?

The Dietrich post office opened in 1909, the earliest record of the town by name (U.S. post office records).

What is on the National Register in Dietrich?

One place: the Paul, Denton J., Water Tank (listed 1983).

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