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History · Dolphin Township

Dolphin Township’s post office opened in 1886, and 56% of its homes were built before 1940

Below: maps from 1968 on.

1886first post office
0on the National Register
56%homes built before 1940
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Quick answers

How Dolphin Township began

When was Dolphin Township founded?

1886

The Dolphin Township post office opened in 1886, the earliest record of the town by name. Another post office, Dolphin (1886), opened inside today’s town and later closed.

2020 census: 138140 years
Founding year: the first Dolphin Township post office (Blevins & Helbock, CC0).

What stands out about Dolphin 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 Dolphin Township are in the public archives yet. The rest are in attics and albums.Old housesHalf of Dolphin Township’s homes were built before 1938.
★ What stands out · Help out

Start Dolphin Township’s collection

The first neighbors to add old photos shape how Dolphin 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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The story so far

Dolphin Township, in brief

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

Dolphin Township is a township (one of 30) in Knox County, Nebraska, United States. The population was 130 at the 2020 census. A 2023 estimate placed the township's population at 130.

Its first post office opened in 1886. Its population held steady between the last two censuses: 138 in 2010, 138 in 2020.

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

Timeline

Dolphin Township, 1886 to 1968

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

  1. 19th century
  2. 1886Post officeThe Dolphin post office opens
  3. 1890Post officeThe Dolphin post office closes
  4. 20th century
  5. 1968On 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.
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On the map

Dolphin Township on the map, 1968 to 1985

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

Dolphin Township on the 1968 USGS mapDolphin Township on the 1985 USGS map1968Bloomfield NE 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 Dolphin Township.

Places that used to be

Lost post offices

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

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

Stories next door

History across the town line

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

Peoria TownshipIts storynot graded: under 1,000 residents or part of its townDowling TownshipIts storynot graded: under 1,000 residents or part of its townEastern TownshipIts storynot graded: under 1,000 residents or part of its townAddison TownshipIts storynot graded: under 1,000 residents or part of its town

Questions about Dolphin Township’s history

What year was Dolphin Township founded?

The Dolphin Township post office opened in 1886, 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 →
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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 U.S. Geological Survey historical maps and the US Post Offices dataset (Blevins & Helbock). Archive images are copied here with their credits and licenses, shown on each photo’s page. Refreshed monthly.