Greenwich Township dates to 1798, and 2 of its places are on the National Register
More historic than 68% of U.S. towns · #196 of 468 in New Jersey. What drives it
Most of Greenwich Township was built recently: 7% of its homes predate 1940 and the median home dates from 1994. 2 places in town are on the National Register, among them a historic district with 1 buildings. Below: 1 old photo or paper, maps from 1890 on, and the census since 1810.
Founding year: Wikidata; Wikipedia’s history section gives the same year. First post office: 1816.
History grade
What drives Greenwich Township’s History grade
On its age, its old homes and the National Register, Greenwich Township is more historic than 68% of U.S. towns, #196 of 468 in New Jersey. Its age holds the grade up; its share of homes from before 1940 pulls it down.
B+
HistoryA character grade: shown, never part of Greenwich Township’s overall grade.
New Jersey towns list more on the Register than most of the country (a typical New Jersey town has 3.7 per 10,000 residents, the U.S. 2.4), so Greenwich Township’s 9.1 sits above most of its state (67% of New Jersey towns have fewer) while its 5 historic buildings outnumber those of 70% of U.S. towns.
How sure. Graded on any two of the three inputs instead, the letter would range from B− to A−. The pre-1940 share is a Census survey estimate (±3.3 points). Two sources give 1798.
Founding year: Wikidata (other dates in Quick answers). Homes: Census ACS 2020–24. National Register: National Park Service, May 2026 list; each listing counted once (boundary changes and added documentation belong to their listing), and a historic district counts its contributing buildings. How TownRatings grades history →
What stands out about Greenwich Township’s past
Read from the archive, the National Register and the record. The page puts what stands out first.
Lost two-thirds of its people between 1830 and 1890, then grew 6-fold.
22 censuses, 1810–2020.
U.S. Census Bureau decennial counts, from the census table on Greenwich Township’s Wikipedia page.
On the map
Greenwich Township on the map, 1890 to 1955
Every edition of the U.S. Geological Survey’s map of Greenwich Township. Tap a year, or press play to watch the town change.
1890Easton 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 Greenwich Township.
The story so far
Greenwich Township, in brief
Wikipedia doesn’t have a history of Greenwich Township yet. The photos, dates and memories neighbors add here are how it gets written.
Greenwich Township () is a township in Warren County, in the U.S. state of New Jersey. As of the 2020 United States census, the township's population was 5,473, a decrease of 239 (−4.2%) from the 2010 census count of 5,712, which in turn reflected an increase of 1,347 (+30.9%) from the 4,365 counted in the 2000 census. Greenwich Township has at various times been a part of most of Northwestern New Jersey's counties. The township was first mentioned in official documents on October 9, 1738, as a part of Hunterdon County. On March 15, 1739, it became part of the newly formed Morris County. On January 22, 1750, portions of the township were taken to form Hardwick Township. On June 8, 1753, Sus…
Greenwich Township was established in 1798. Between the 2010 and 2020 censuses its population fell from 5,712 to 5,473 (-4%).
Intro from Wikipedia. Population: U.S. Census Bureau.
From the old history books
What they wrote about Greenwich Township in 1929
Passages that mention Greenwich Township, cut from the printed page as they were published.
History and directory of Warren County, New Jersey1929 · page 38Read the page →
Read the text
Church itself stands in Lopatcong township, while the graveyard across the road is in Greenwich Township. Straw Church takes its name from a Lutheran Church, built here of logs and thatched with straw. This was about 1758. A church of stone replaced the original straw church, and the present brick church, pictured under Greenwich Township in this volume, was built in 1834. This church may be called the mother of the churches at Stewartsville, Riegelsville and the Chapel in Phillipsburg.
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.
Timeline
Greenwich Township, 1760 to 2010
Woven from the archive, old maps, post office records, the National Register and the people born here.
Nothing in the archives for these yearsWeddings on Main Street, storms, parades, school pictures, the old store. If it’s in your family album, it belongs here.
In 1798, according to Wikidata and Wikipedia’s history of the town. Greenwich Township’s post office opened in 1816, and the census of 1810 counted 2,528 people here.
How does Greenwich Township rank for history?
Greenwich Township is more historic than 68% of U.S. towns, #196 of 468 in New Jersey. The History grade combines the town’s founding era, the share of homes built before 1940 and its National Register listings. It’s a character grade, so it isn’t part of the overall grade. How it works.
What is on the National Register in Greenwich Township?
Two places: the Kennedy House and Mill (listed 1996) and the St. James Lutheran Church and Cemetery (2016).
How old are the homes in Greenwich Township?
7% of Greenwich Township’s homes were built before 1940 (Census estimate, ±3.3 points), against a typical 15% for a New Jersey town; the median home was built in 1994.
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).
From Wikimedia Commons (12), the National Register of Historic Places (2), U.S. Geological Survey historical maps, U.S. Census counts (via Wikipedia), the US Post Offices dataset (Blevins & Helbock), the USGS Geographic Names Information System 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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