East Coast of the United States
easternmost coast of the United States, located near the North Atlantic Ocean
The East Coast of the United States, also known as the Eastern Seaboard, the Atlantic Coast, and the Atlantic Seaboard, is the region encompassing the coastline where the Eastern United States meets the Atlantic Ocean; it has always played a major socioeconomic role in the development of the United States.
The region is generally understood to include the U.S. states that border the Atlantic Ocean: Connecticut, Delaware, Florida, Georgia, Maine, Maryland, Massachusetts, New Hampshire, New Jersey, New York, North Carolina, Rhode Island, South Carolina, and Virginia, as well as some landlocked states (Pennsylvania, Vermont, West Virginia, and the district of Washington, D.C.).
Toponymy and composition
The toponym derives from the concept that the contiguous 48 states are defined by two major coastlines, one at the western edge and one on the eastern edge. Other terms for referring to this area include the Eastern seaboard, which is another term for coastline, Atlantic Coast, and Atlantic Seaboard because the coastline lies along the Atlantic Ocean.
The 14 states that have a shoreline on the Atlantic Ocean are (from north to south) Maine, New Hampshire, Massachusetts, Rhode Island, Connecticut, New York, New Jersey, Delaware, Maryland, Virginia, North Carolina, South Carolina, Georgia, and Florida. Pennsylvania and Washington, D.C. border the Delaware River and the Potomac River, respectively, both of which are tidal arms of the Atlantic Ocean.
Colonial history
The original Thirteen Colonies of Great Britain in North America all lay on or near the East Coast.
Two additional U.S. states on the East Coast were not among the original Thirteen Colonies: Maine became part of Massachusetts Bay Colony in 1677 and Florida was held by the British from the end of the French and Indian War until 1781 and was part of New Spain until 1821.
In present-day Florida, Spanish explorer Juan Ponce de León made the first textual records of the state during his 1513 voyage. The state was initially named for Ponce de León, who called the peninsula La Pascua Florida in recognition of the verdant landscape and because it was the Easter season.
“East Coast of the United States” enters the record as easternmost coast of the United States, located near the North Atlantic Ocean. Crown Archives preserves that source wording while asking what East, Coast and United can confirm, complicate or overturn.
Why this record matters
“East Coast of the United States” is worth following because a concise public description often conceals a longer documentary argument. Here, East, Coast and United provides the most credible route into that argument.
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 Jul 28, 2026. The linked authority identifier is Q4268. VIAF identifies the subject as 315125596. The Library of Congress control number is sh85009190. Authority coordinates are 37.023, -77.370. 1 of 3 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 1677, 1781, 1821 and 1513.
A single description cannot reconcile every naming convention, rebuilding phase or administrative transfer associated with a place. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. 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 “East Coast of the United States”, its source revision and the description used here.
- Expand the search: follow East Coast of the United States primary sources, East Coast of the United States archive and East 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 “East Coast of the United States”?
- What physical evidence or contemporary plan supports the description?
- Which earlier names or jurisdictions may reveal additional records?
Search terms from this dossier
This entry incorporates text from “East Coast of the United States” 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.