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History · Uniopolis

Uniopolis dates to 1837, and 1 of its places is on the National Register

Most of Uniopolis was built recently: 6% of its homes predate 1940 and the median home dates from 1991. Below: maps from 1906 on and the census since 1880.

1837founded
1on the National Register
6%homes built before 1940
Add an old photoShare a memory
Photo: Nyttend · Public domain
Quick answers

How Uniopolis began

When was Uniopolis founded?

1837

Uniopolis dates its founding to 1837 (Wikipedia’s history). The census first counted it in 1880.

First census: 116 in 18802020 census: 188189 years
Founding year: Wikipedia. First post office: 1851.The full story ↓

What stands out about Uniopolis’ 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 Uniopolis are in the public archives yet. The rest are in attics and albums.Boom and bustPeaked at 298 in 1960; 188 people lived here in 2020.On the map since 19063 editions of the USGS map, 1906 to 1971. Watch Uniopolis change.Deep rootsEstablished in 1837: 189 years of Uniopolis.
★ What stands out · Help out

Start Uniopolis’s collection

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

Decades since 1900 with photos
00s10s20s30s40s50s60s70s80s90s
0 of 10 decades. The empty ones are waiting for someone’s album.
Share a family photoSign in to add one+10
People over time

Uniopolis, census by census

010020030018801900192019401960198020002020Peak: 298

Peaked at 298 in 1960; 188 people lived here in 2020.

13 censuses, 1880–2020.

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

On the map

Uniopolis on the map, 1906 to 1971

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

Uniopolis on the 1906 USGS mapUniopolis on the 1961 USGS mapUniopolis on the 1971 USGS map1906Lima 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 Uniopolis.

The story

How Uniopolis came to be

From Wikipedia’s history of Uniopolis.

Read it all →

Uniopolis was founded in 1837 and incorporated in 1900. In 2013, voters chose to disincorporate Uniopolis into Union Township.

Its village hall, now a museum, is listed on the National Register of Historic Places.

Text from Wikipedia, licensed CC BY-SA 4.0.

Timeline

Uniopolis, 1837 to 1960

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

  1. 19th century
  2. 1837
    FoundingUniopolis is established
  3. 20th century
  4. 1906On the mapFirst mapped by the U.S. Geological Survey
  5. 1960CensusPopulation peaks at 298
By decade

Uniopolis, decade by decade

Today6 recent
Untitled photo2018Untitled photoUniopolis post office 458882015Uniopolis post office 45888Uniopolis fire station2015Uniopolis fire stationUniopolis UMC2015Uniopolis UMCMap of Auglaize County Ohio Highlighting Uniopolis Village2015Map of Auglaize County Ohio Highlighting Uniopolis Vi…MapOHMap-doton-Uniopolis2004OHMap-doton-Uniopolis
On the National Register

1 historic place in Uniopolis

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

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

Questions about Uniopolis’ history

What year was Uniopolis founded?

In 1837, according to Wikipedia’s history of the town. Uniopolis’ post office opened in 1851, and the census of 1880 counted 116 people here.

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), Wikipedia, U.S. Geological Survey historical maps and U.S. Census counts (via Wikipedia). Archive images are copied here with their credits and licenses, shown on each photo’s page. Refreshed monthly.