Photo: Zeete · CC BY-SA 4.0

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History · Hibernia

Hibernia’s post office opened in 1868, and 1 of its places is on the National Register

Most of Hibernia was built recently: 0.0% of its homes predate 1940 and the median home dates from 1955. Below: maps from 1984 on and old-book passages.

1868first post office

1on the National Register

0.0%homes built before 1940

1famous people

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Photo: Zeete · CC BY-SA 4.0

Quick answers

How Hibernia began

When was Hibernia founded?

1868

The Hibernia post office opened in 1868, the earliest record of the town by name.

2020 census: 208158 years

Founding year: the first Hibernia post office (Blevins & Helbock, CC0).

What stands out about Hibernia’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 Hibernia are in the public archives yet. The rest are in attics and albums.Old housesHalf of Hibernia’s homes were built before 1955.

★ What stands out · Help out

Start Hibernia’s collection

The first neighbors to add old photos shape how Hibernia’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

Hibernia, in brief

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

Hibernia is an unincorporated community and census-designated place (CDP) located along County Route 513 (Green Pond Road) in Rockaway Township of Morris County, in the U.S. state of New Jersey. The area is served as United States Postal Service ZIP Code 07842. The community takes its name from Hibernia, the classical name for Ireland. As of the 2020 United States census, the area had a population of 208. The Hibernia mines, a series of iron mines worked from pre-Revolutionary times until 1916, are located here.

Its first post office opened in 1868.

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

From the old history books

What they wrote about Hibernia, 1882–1914

Passages that mention Hibernia, cut from the printed page as they were published.

**A history of Morris County, New Jersey**1914 · page 161Read the page →
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The Hibernia Mine Railroad Company was incorporated March 18, 1863, with a capital of $25,000, with authority to build a railroad from the Hibernia mines to any point on the Morris canal in Morris county; also to connect with the M. and E. railroad, and to build spurs to any adjacent iron
Text read by machine from the scan; it may contain errors.

The history of the works at Hibernia for the twenty years succeeding the Revolution is involved in obscurity. Lord Stirling's affairs after his death were found to be so much involved that his property was publicly sold by the sheriff. In 1774 he had applied to the board of proprietors for the purc… — **History of Morris County, New Jersey**1882 · page 52Read the page →
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The history of the works at Hibernia for the twenty years succeeding the Revolution is involved in obscurity. Lord Stirling's affairs after his death were found to be so much involved that his property was publicly sold by the sheriff. In 1774 he had applied to the board of proprietors for the purchase of the large tract surrounding his works at Hibernia, extending as far as Copperas Mountain and Greenville and known as the Hibernia
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An underground railroad has been constructed from the foot of the hill northeast upon or in the vein through the bowels of the mountain, which brings the product of all the upper mines to the terminus of the Hibernia Railroad, on which all the ore of the Hibernia mines goes to market. The tonnage o… — **History of Morris County, New Jersey**1882 · page 65Read the page →
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An underground railroad has been constructed from the foot of the hill northeast upon or in the vein through the bowels of the mountain, which brings the product of all the upper mines to the terminus of the Hibernia Railroad, on which all the ore of the Hibernia mines goes to market. The tonnage of this road, almost entirely made up of the product of these mines, was 99,123 tons in 1879.
Text read by machine from the scan; it may contain errors.

On October 26, 1869, a Methodist Episcopal church was dedicated at Hibernia, built with funds largely contributed by the mining companies and merchants, the cost being $8,100. In 1871 a parsonage was erected at a cost of $2,200, furnished at a cost of $325, and a parsonage library added. The first … — **A history of Morris County, New Jersey**1914 · page 165Read the page →
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On October 26, 1869, a Methodist Episcopal church was dedicated at Hibernia, built with funds largely contributed by the mining companies and merchants, the cost being $8,100. In 1871 a parsonage was erected at a cost of $2,200, furnished at a cost of $325, and a parsonage library added. The first pastor was Rev. J. W. Folsom.
Text read by machine from the scan; it may contain errors.

Scans and text from the Internet Archive. Books published in 1930 or earlier, which are in the public domain.

By decade

Hibernia, decade by decade

Today3 recent

2025Bat Cave Entrance

2021Hibernia, NJ - area view

2012Hibernian at Hibernia, N.J

On the map

Hibernia on the map in 1984

The U.S. Geological Survey’s map of Hibernia.

1984Newark sheet · 1:100,000

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

On the National Register

1 historic place in Hibernia

The country’s official list of buildings and places worth saving.

place listed

National Historic Landmarks

none yet

historic buildings protected

each building in a district counts

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

Stories next door

History across the town line

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

White Meadow LakeIts storynot graded: under 1,000 residents or part of its town Lake TelemarkIts storynot graded: under 1,000 residents or part of its town Mount HopeIts storynot graded: under 1,000 residents or part of its town

Questions about Hibernia’s history

What year was Hibernia founded?

The Hibernia post office opened in 1868, 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 (3), Wikidata and Wikipedia for famous people, U.S. Geological Survey historical maps and old county and town histories (Internet Archive). Archive images are copied here with their credits and licenses, shown on each photo’s page. Refreshed monthly.

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