Brooklyn
borough of New York City, New York, United States
Brooklyn, coextensive with Kings County, is the most populous of the five boroughs and counties of New York City, New York. Located at the westernmost end of Long Island and formerly an independent city, Brooklyn shares a land border with the borough and county of Queens. It has several bridge and tunnel connections to the borough of Manhattan, across the East River, including the architecturally significant Brooklyn Bridge, and is connected to Staten Island by the Verrazzano–Narrows Bridge.
The borough, as Kings County, at 37,339.9 inhabitants per square mile (14,417.0/km2), is the second most densely populated county, and New York City borough, in the U.S. after Manhattan (New York County), and the most populous county in the state, as of 2022. In the 2020 United States census, the borough had a population of 2,736,074. Had Brooklyn remained an independent city on Long Island, it would now be the fourth most populous American city after the rest of New York City, Los Angeles, and Chicago. With a land area of 69.38 square miles (179.7 km2) and a water area of 27.48 square miles (71.2 km2), Kings County, one of the twelve original counties established under British rule in 1683 in the then-province of New York, is the state of New York's fourth-smallest county by land area and third smallest by total area.
Brooklyn, named after the Dutch town of Breukelen in the Netherlands, was founded by the Dutch in the 17th century and grew into a busy port city on New York Harbor by the 19th century. On January 1, 1898, after a long political campaign and public-relations battle during the 1890s and despite opposition from Brooklyn residents, Brooklyn was consolidated and annexed, along with other areas, to form the current five-borough structure of New York City in accordance with the new municipal charter of Greater New York. The borough continues to maintain a distinct culture.
Begin with the source’s own compact description: “Brooklyn” is borough of New York City, New York, United States. The dossier treats that line as a proposition to test through Brooklyn, borough and York, not as a finished interpretation.
Why this record matters
The phrase “borough of New York City, New York, United States” supplies a clear boundary for inquiry. It also exposes the unanswered questions: who defined that boundary, when it became stable and which sources sit outside it.
Maps, plans, fabric surveys and administrative records can establish how the site’s name, extent and function changed over time. The source revision retrieved here is dated Sep 16, 2026. The linked authority identifier is Q18419. The Library of Congress control number is n80040311. Authority coordinates are 40.651, -73.950. 4 of 7 selected statements include explicit references; 5 carry qualifiers and 0 use preferred rank. The first chronological checks are 2022, 2020, 1683 and 1898.
A single description cannot reconcile every naming convention, rebuilding phase or administrative transfer associated with a place. The source lead contains qualifying language; that uncertainty should survive quotation, summary and reuse. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Treat names, boundaries and functions as historically changeable. Maps, plans, inventories and administrative records can clarify what the place meant at different dates.
- Historic place names
- Jurisdictional context
- Routes into maps and plans
Contemporary maps, plans, listed-building records, estate papers and the responsible local or national archive.
Three-step research path
- Establish the record: confirm the title “Brooklyn”, its source revision and the description used here.
- Expand the search: follow Brooklyn primary sources, Brooklyn archive and Brooklyn research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “Brooklyn”?
- Which earlier names or jurisdictions may reveal additional records?
- Which authority defined the place, boundary or structure at the relevant date?
Search terms from this dossier
This entry incorporates text from “Brooklyn” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.