Brookside’s post office opened in 1868, and 1 of its places is on the National Register
Most of Brookside was built recently: 8% of its homes predate 1940 and the median home dates from 1970. Its Register listing is . Below: old-book passages.
Wikipedia doesn’t have a history of Brookside yet. The photos, dates and memories neighbors add here are how it gets written.
Brookside (once called Waterstreet) is a historic unincorporated community and census-designated place (CDP) located within Mendham Township in Morris County, in the U.S. state of New Jersey. It is located approximately 6 mi (9.7 km) west of Morristown, the county seat. In the Forbes magazine 2009 ranking of the Most Expensive ZIP Codes in the United States, Brookside was ranked as the 10th most expensive in the country, with its median home sale price of $3,121,115. It was first listed as a CDP in 2020 census with a population of 1,767.
Its first post office opened in 1868.
Intro from Wikipedia. Population: U.S. Census Bureau.
From the old history books
What they wrote about Brookside, 1882–1899
Passages that mention Brookside, cut from the printed page as they were published.
Biographical and genealogical history of Morris county, New Jersey1899 · page 189Read the page →
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Timothy Pierson, the father of our subject, was a wheelwright by occupation and followed the same in early life, but subsequently conducted a sawmill at Brookside and Speedwell. He was united in marriage to Miss Mary Blackford, whose grandfather, Benjamin Blackford, came to Morris county more than a century ago and was pastor of a Baptist church at Mount Freedom, this county.
Text read by machine from the scan; it may contain errors.
History of Morris County, New Jersey1882 · page 242Read the page →
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Of the Byrams we have a very full and satisfactory record. Aaron G. Byram, of Brookside, has taken filial pains to preserve the record of his fathers. Ebenezer Byram was a grandson of Nicholas Byram, an English gentleman who settled at Bridgewater, Mass., about 1660, and died there in 1688, leaving a son. Captain Nicholas Byram, of whom honorable mention is made in the history of Bridgewater. His son Ebenezer, born in 1692,
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.
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) 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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