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–Not graded
History · Union Dale

Union Dale’s post office opened in 1852, and 40% of its homes were built before 1940

Below: maps from 1892 on and the census since 1880.

1852first post office
0on the National Register
40%homes built before 1940
Add an old photoShare a memory
Photo: Adam Moss from Tonawanda, New York, United States · CC BY-SA 2.0
Quick answers

How Union Dale began

When was Union Dale founded?

1852

The Union Dale post office opened in 1852, the earliest record of the town by name. Wikidata gives 1885.

First census: 146 in 18802020 census: 220174 years
Founding year: the first Union Dale post office (Blevins & Helbock, CC0). Wikidata: 1885.

What stands out about Union Dale’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 Union Dale are in the public archives yet. The rest are in attics and albums.On the map since 18924 editions of the USGS map, 1892 to 1994. Watch Union Dale change.Boom and bustPeaked at 370 in 1920; 220 people lived here in 2020.
★ What stands out · Help out

Start Union Dale’s collection

The first neighbors to add old photos shape how Union Dale’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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On the map

Union Dale on the map, 1892 to 1994

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

Union Dale on the 1892 USGS mapUnion Dale on the 1946 USGS mapUnion Dale on the 1969 USGS mapUnion Dale on the 1994 USGS map1892Honesdale sheet · 1:62,500

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

People over time

Union Dale, census by census

010020030040018801900192019401960198020002020Peak: 370

Peaked at 370 in 1920; 220 people lived here in 2020.

15 censuses, 1880–2020.

U.S. Census Bureau decennial counts, from the census table on Union Dale’s Wikipedia page.

The story so far

Union Dale, in brief

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

Union Dale is a borough in Susquehanna County, Pennsylvania, United States. The borough was incorporated in 1885. As of the 2020 census, Union Dale had a population of 220.

Its first post office opened in 1852. Between the 2010 and 2020 censuses its population fell from 267 to 220 (-18%).

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

Timeline

Union Dale, 1852 to 1920

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

  1. 19th century
  2. 1852Post officeThe Union Dale post office opens
  3. 1892On the mapFirst mapped by the U.S. Geological Survey
  4. 20th century
  5. 1920CensusPopulation peaks at 370
By decade

Union Dale, decade by decade

Today6 recent
Rounds Cemetery, Union Dale, PA, April 20252025Rounds Cemetery, Union Dale, PA, April 2025Mount Hermon Lodge, Union Dale, PA, April 20252025Mount Hermon Lodge, Union Dale, PA, April 2025Mount Hermon Lodge front, Union Dale, PA, April 20252025Mount Hermon Lodge front, Union Dale, PA, April 2025Darrow Street nb, Union Dale, PA, April 20252025Darrow Street nb, Union Dale, PA, April 2025D&H Trail nb from Norton Hill Street, Union Dale, PA, April 20252025D&H Trail nb from Norton Hill Street, Union Dale, PA,…D&H Caboose and trail, Union Dale, PA, April 20252025D&H Caboose and trail, Union Dale, PA, April 2025
Stories next door

History across the town line

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

Herrick TownshipIts storynot graded: under 1,000 residents or part of its townClifford TownshipIts storyB

Questions about Union Dale’s history

What year was Union Dale founded?

The Union Dale post office opened in 1852, the earliest record of the town by name (U.S. post office records). Wikidata gives 1885.

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 (6), U.S. Geological Survey historical maps, U.S. Census counts (via Wikipedia), 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.