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–Not graded
History · Mount Hermon
Mount Hermon’s post office opened in 1875
Most of Mount Hermon was built recently: 9% of its homes predate 1940 and the median home dates from 1984. Below: maps from 1888 on and old-book passages.
Photo: Mr. Matté (if there is an issue with this image, contact me using this image's Commons talk page, my Commons user talk page, or my English Wikipedia user talk page; I'll know about it a lot faster) · CC BY-SA 4.0
Quick answers
How Mount Hermon began
When was Mount Hermon founded?
1875
The Mount Hermon post office opened in 1875, the earliest record of the town by name.
2020 census: 172151 years
Founding year: the first Mount Hermon post office (Blevins & Helbock, CC0).
What stands out about Mount Hermon’s past
Read from the archive, the National Register and the record. The page puts what stands out first.
Every edition of the U.S. Geological Survey’s map of Mount Hermon. Tap a year, or press play to watch the town change.
1888Hackettstown 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 Mount Hermon.
The story so far
Mount Hermon, in brief
Wikipedia doesn’t have a history of Mount Hermon yet. The photos, dates and memories neighbors add here are how it gets written.
Mount Hermon is an unincorporated community and census-designated place (CDP) located within Hope Township in Warren County, in the U.S. state of New Jersey, that was defined as part of the 2010 United States census. As of the 2020 census, Mount Hermon had a population of 172.
Its first post office opened in 1875. Between the 2010 and 2020 censuses its population grew from 141 to 172 (+22%).
Intro from Wikipedia. Population: U.S. Census Bureau.
From the old history books
What they wrote about Mount Hermon in 1929
Passages that mention Mount Hermon, cut from the printed page as they were published.
History and directory of Warren County, New Jersey1929 · page 29Read the page →
Read the text
Mount Hermon was known for nearly a century as Green’s Chapel, from a Methodist Episcopal Church founded there in 1798, and named after Thomas Green, who owned a tract of twelve hundred acres. In 1849, the name was changed to Mount Hermon. The first store was opened in 1878 by Jefferson Loller, who was postmaster, but with the advent of rural delivery the post office was closed.
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
No old photos in the archives yet
Weddings on Main Street, storms, parades, school pictures, the old store. If it’s in your family album, it belongs here.
Be the first to add onePhotograph a print flat, in daylight, no flash.
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 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.
