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 Prospect Park began
When was Prospect Park founded?
1901
Prospect Park dates its founding to 1901 (Wikidata). The census first counted it in 1910.
First census: 2,719 in 19102020 census: 6,372125 years
How historic is Prospect Park?
C+
More historic than 37% of U.S. towns, on its age, its old homes and the National Register.
On its age, its old homes and the National Register, Prospect Park is more historic than 37% of U.S. towns, #367 of 468 in New Jersey. Its share of homes from before 1940 holds the grade up; its age pulls it down.
C+
HistoryA character grade: shown, never part of Prospect Park’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 Prospect Park’s 0.0 sits below most of its state (12% of New Jersey towns have fewer) while its 0 listings outnumber those of 23% of U.S. towns.
NoteThe founding year comes from Wikidata alone; no second source gives 1901.
How sure. Graded on any two of the three inputs instead, the letter would range from D− to B. The pre-1940 share is a Census survey estimate (±11.4 points).
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 Prospect Park’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 Prospect Park. Tap a year, or press play to watch the town change.
1888Paterson 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 Prospect Park.
The story so far
Prospect Park, in brief
Wikipedia doesn’t have a history of Prospect Park yet. The photos, dates and memories neighbors add here are how it gets written.
Prospect Park is a borough in Passaic County, in the U.S. state of New Jersey. As of the 2020 United States census, the borough's population was 6,372, an increase of 507 (+8.6%) from the 2010 census count of 5,865, which in turn reflected an increase of 86 (+1.5%) from the 5,779 counted in the 2000 census. The borough of Prospect Park was formed by an act of the New Jersey Legislature on March 13, 1901, from portions of the now-defunct Manchester Township. The borough was named for Prospect Park, Brooklyn. It is a dry town, where alcohol cannot be sold, as affirmed by an ordinance passed in 1978.
Prospect Park was established in 1901. Between the 2010 and 2020 censuses its population grew from 5,865 to 6,372 (+9%).
Intro from Wikipedia. Population: U.S. Census Bureau.
In 1901, according to Wikidata. the census of 1910 counted 2,719 people here.
How does Prospect Park rank for history?
Prospect Park is more historic than 37% of U.S. towns, #367 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.
How old are the homes in Prospect Park?
52% of Prospect Park’s homes were built before 1940 (Census estimate, ±11.4 points), against a typical 15% for a New Jersey town; the median home was built in 1938.
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 (4), U.S. Geological Survey historical maps, U.S. Census counts (via Wikipedia) 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.