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History · Delco

Delco’s post office opened in 1918

Most of Delco was built recently: 4% of its homes predate 1940 and the median home dates from 1954.

1918first post office
0on the National Register
4%homes built before 1940
Quick answers

How Delco began

When was Delco founded?

1918

The Delco post office opened in 1918, the earliest record of the town by name. Another post office, New Berlin (1907), opened inside today’s town and later closed.

2020 census: 287108 years
Founding year: the first Delco post office (Blevins & Helbock, CC0).

What stands out about Delco’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 Delco’s collection

The first neighbors to add old photos shape how Delco’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

Delco, in brief

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

Its first post office opened in 1918. Between the 2010 and 2020 censuses its population fell from 348 to 287 (-18%).

Timeline

Delco, 1907 to 1918

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

  1. 20th century
  2. 1907Post officeThe New Berlin post office opens
  3. 1918Post officeThe New Berlin post office closes
  4. 1918Post officeThe Delco post office opens
By decade

Delco, decade by decade

Places that used to be

Lost post offices and old corners

Delco’s post office has been open since 1918. Another post office, New Berlin, opened and closed inside today’s town.

New Berlin
1907–1918
Delco
1918–today
19001960today
Hamlets and corners on the map
New Berlin

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

Questions about Delco’s history

What year was Delco founded?

The Delco post office opened in 1918, 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 →
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 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.