Syosset, New York
census designated place in Nassau County, New York, United States
Syosset is a hamlet and census-designated place (CDP) located within the Town of Oyster Bay in Nassau County, on the North Shore of Long Island, in New York, United States. The population was 19,259 at the time of the 2020 census.
History
The location of what is now Syosset was originally inhabited by Matinecock Native Americans. In the 17th century, European colonists – primarily the Dutch and English – began to settle the area.
In 1962, Syosset Hospital – the hamlet's local hospital – was established. Located on Jericho Turnpike (NY 25), the hospital's opening provided the growing suburban community with improved, local medical care and facilities.
Geography
According to the U.S. Census Bureau, Syosset has a total area of 5.0 square miles (13 km2), all land. Syosset absorbed the hamlet and former CDP of Locust Grove for the 1990 census.
The CDP gained some territory from the village of Muttontown between the 2000 census and 2010 census, and also lost some territory, which was annexed to the village of Laurel Hollow.
Syosset is approximately 32 miles (50 km) east of Midtown Manhattan, 14 miles (20 km) east of the eastern border with Queens, 23 miles (40 km) southeast of the Throgs Neck Bridge, and 168 miles (270 km) southeast of Albany, the state capital.
This brief starts where responsible research should: with the source description of “Syosset, New York” as census designated place in Nassau County, New York, United States. Everything that follows is an evidence route, not borrowed authority.
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.
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 18, 2026. The linked authority identifier is Q3056724. VIAF identifies the subject as 126202376. The Library of Congress control number is n88155875. Authority coordinates are 40.813, -73.501. 1 of 3 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 2020, 1962, 1990 and 2000.
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 “Syosset, New York”, its source revision and the description used here.
- Expand the search: follow Syosset, New York primary sources, Syosset, New York archive and Syosset 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 “Syosset, New York”?
- 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 “Syosset, 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.