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History · Castalia

Castalia’s post office opened in 1855, and 1 of its places is on the National Register

Most of Castalia was built recently: 10% of its homes predate 1940 and the median home dates from 1968. Its Register listing is the Castalia School. Below: maps from 1979 on and the census since 1880.

1855first post office
1on the National Register
10%homes built before 1940
Quick answers

How Castalia began

When was Castalia founded?

1855

The Castalia post office opened in 1855, the earliest record of the town by name.

First census: 133 in 18802020 census: 264171 years
Founding year: the first Castalia post office (Blevins & Helbock, CC0).The full story ↓

What stands out about Castalia’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 Castalia’s collection

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

Decades since 1900 with photos
00s10s20s30s40s50s60s70s80s90s
0 of 10 decades. The empty ones are waiting for someone’s album.
People over time

Castalia, census by census

010020030040018801900192019401960198020002020Peak: 421

Peaked at 421 in 1950; 264 people lived here in 2020.

15 censuses, 1880–2020.

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

The story

How Castalia came to be

From Wikipedia’s history of Castalia.

Read it all →

Castalia developed in about 1850 and was incorporated as a town in 1873. The name was suggested by local educator R.D. Richardson in homage to the Castalian Spring in Greece.

Text from Wikipedia, licensed CC BY-SA 4.0.

Timeline

Castalia, 1855 to 1979

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

  1. 19th century
  2. 1855Post officeThe Castalia post office opens
  3. 20th century
  4. 1950CensusPopulation peaks at 421
  5. 1979On the mapFirst mapped by the U.S. Geological Survey
By decade

Castalia, decade by decade

On the map

Castalia on the map, 1979 to 1991

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

Castalia on the 1979 USGS mapCastalia on the 1984 USGS mapCastalia on the 1991 USGS map1979Castalia 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 Castalia.

On the National Register

1 historic place in Castalia

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
first listed
2018
Castalia School
All 1 listings

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

Famous people

Famous people close to Castalia

Nobody well known was born in Castalia itself, so here are the best known from just nearby.

See all →

Questions about Castalia’s history

What year was Castalia founded?

The Castalia post office opened in 1855, the earliest record of the town by name (U.S. post office records).

What is on the National Register in Castalia?

One place: the Castalia School (listed 2018).

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), the National Register of Historic Places (1), Wikipedia, 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.