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Research dossier · Places & Architecture

Plainedge, New York

census-designated place in Nassau County, New York, United States

Architectural plans, a scale model, maps and brass measuring instruments
Places and architectureInterpretive dossier study · Crown Archives visual atlas
Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionApr 1, 2026
Entity authorityQ3452272 ↗
Source-derived summary

Plainedge (previously known as Turkeyville) is a hamlet and census-designated place (CDP) on the South Shore in the Town of Oyster Bay in Nassau County, on Long Island, in New York, United States. The population was 9,517 at the time of the 2020 census.

History

Plainedge was originally acquired from Marsapeque Indian chiefs Sowwamacus, Wm Choppy, Soureekenny, Wamassum, Sascomoma and Ruampass land as part of the Bethpage Purchase of 1687 by Thomas Powell of the Huntington settlement. At the time, initial purchases from various settlers would occupy the "Plain Edge District" within various districts. The first of note came in 1690, through the efforts of eighteen joint ventures, with the purchase of the "West Neck" that occupied the western arena of Plainedge. In 1694, William Frost purchased all land south of Boundary Avenue, which was gifted to him by Indians Chippie, Maomie and Seruckon. There was still a remainder of land yet to be obtained, however. Through the efforts of Powell, the "Rim of the Woods Purchase" of 1699 acquired the remaining land in the northern section of Plainedge (Boundary Avenue, north to Old Motor Parkway, and Hicksville Road east to Cedar Drive).

The earliest developments of Plainedge past these purchases would manifest through the efforts of landowners and their African slaves. In the late eighteenth century to early nineteenth century, landowners would facilitate and oversee the development of roads, highways, and offices.

Editorial summary

This brief starts where responsible research should: with the source description of “Plainedge, New York” as census-designated place in Nassau County, New York, United States. Everything that follows is an evidence route, not borrowed authority.

Editorial reviewA strong orientation record where physical form, institutional use and historical geography need to be read together. The current lead gives the account dated anchors—2020, 1687, 1690, 1694—that can be checked directly. The selected authority fields contribute no independent date. The account is most persuasive where Plainedge, York and census-designated can be independently traced.
Editorial analysis

Why this record matters

The subject matters to the places & architecture register because the source frames it as census-designated place in Nassau County, New York, United States. Its deeper value depends on whether names, dates, institutions and citations support that framing.

Evidence profile

Place names and jurisdictional language are key evidence: both can reveal earlier catalogue descriptions and overlooked record series. The source revision retrieved here is dated Apr 1, 2026. The linked authority identifier is Q3452272. VIAF identifies the subject as 157225362. The Library of Congress control number is n89151509. Authority coordinates are 40.723, -73.479. 2 of 3 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 2020, 1687, 1690 and 1694.

Critical limits

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.

Best used for
  • Historic place names
  • Jurisdictional context
  • Routes into maps and plans
Verify next

Contemporary maps, plans, listed-building records, estate papers and the responsible local or national archive.

Three-step research path

  1. Establish the record: confirm the title “Plainedge, New York”, its source revision and the description used here.
  2. Expand the search: follow Plainedge, New York primary sources, Plainedge, New York archive and Plainedge research across catalogues and specialist indexes.
  3. Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.

Questions for further research

  1. Which source most directly establishes the central claim about “Plainedge, New York”?
  2. What physical evidence or contemporary plan supports the description?
  3. Which authority defined the place, boundary or structure at the relevant date?
Subject index

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Source & attribution

This entry incorporates text from “Plainedge, New York” 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.