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History · St. Agatha

St. Agatha’s post office opened in 1892, and 25% of its homes were built before 1940

Below: maps from 1931 on and the census since 1900.

1892first post office
0on the National Register
25%homes built before 1940
Add an old photoShare a memory
Quick answers

How St. Agatha began

When was St. Agatha founded?

1892

The St. Agatha post office opened in 1892, the earliest record of the town by name.

First census: 1,396 in 19002020 census: 730134 years
Founding year: the first St. Agatha post office (Blevins & Helbock, CC0).

What stands out about St. Agatha’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 St. Agatha are in the public archives yet. The rest are in attics and albums.Boom and bustPeaked at 1,874 in 1940; 730 people lived here in 2020.
★ What stands out · Help out

Start St. Agatha’s collection

The first neighbors to add old photos shape how St. Agatha’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

St. Agatha, census by census

05001,0001,5002,0001900192019401960198020002020Peak: 1,874

Peaked at 1,874 in 1940; 730 people lived here in 2020.

13 censuses, 1900–2020.

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

The story so far

St. Agatha, in brief

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

St. Agatha or Saint Agatha (French: Sainte-Agathe) is a town in Aroostook County, Maine, United States. The population was 730 at the 2020 census. According to the most recent American Community Survey data, up to 44.7% of the population age 5 and older speak French at home.

Its first post office opened in 1892. Between the 2010 and 2020 censuses its population fell from 747 to 730 (-2%).

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

Timeline

St. Agatha, 1892 to 1940

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

  1. 19th century
  2. 1892Post officeThe Saint Agatha post office opens
  3. 20th century
  4. 1931On the mapFirst mapped by the U.S. Geological Survey
  5. 1940CensusPopulation peaks at 1,874
By decade

St. Agatha, decade by decade

Today1 recent
Eristalis dimidiata2005Eristalis dimidiata
On the map

St. Agatha on the map, 1931 to 1986

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

St. Agatha on the 1931 USGS mapSt. Agatha on the 1953 USGS mapSt. Agatha on the 1975 USGS mapSt. Agatha on the 1986 USGS map1931Square Lake 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 St. Agatha.

Places that used to be

Old corners and burying grounds

Old hamlets and crossroads still carry their names on the map.

Hamlets and corners on the map
Carriveau MillSaint Agatha
3cemeteries and burying grounds inside St. Agatha
Lower Saint AgathaSaint AgathaUpper Saint Agatha

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.

Madawaska3 historic placesBFrenchville1 historic placeC+

Questions about St. Agatha’s history

What year was St. Agatha founded?

The St. Agatha post office opened in 1892, 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), 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.