Ellicott, Andrew, 1754-1820

Alternative names
Birth 1754-01-24
Death 1820-08-29

Biographical notes:

Andrew Ellicott was a surveyor and mathematician; he was elected to the American Philosophical Society in 1785.

From the guide to the Astronomical journal, 1797-1801, 1797-1801, (American Philosophical Society)

Ellicott (1754-1820) was a surveyor and matematician. He explored the Mississippi River Valley and the southern boundaries of the United States. The Clarke Historical Library has two books by Ellicott and microfilm of his papers which are housed in other institutions.

From the description of Correspondence, 1796. (Clarke Historical Library). WorldCat record id: 43626844

Andrew Ellicott was a surveyor and mathematician, and was elected to the American Philosophical Society in 1785.

From the description of Astronomical journal, 1797-1801. (American Philosophical Society Library). WorldCat record id: 122380159

Surveyor and mathematician; drew up early maps of the District of Columbia.

From the description of Letter : to the President and Directors of the Office of Discount and Deposit, 1820 May 22. (Unknown). WorldCat record id: 22218396

Biographical Note

  • 1754, Jan.24: Born, Bucks County, Pa.
  • 1775: Married Sarah (Sally) Brown Family founded Ellicott City, Md.
  • 1784: Appointed as surveyor of the Mason-Dixon Line
  • 1785: Mathematics teacher, Baltimore Academy, Baltimore, Md.
  • 1789: Appointed to survey southwestern boundary of New York
  • 1791 - 1793 : Surveyor of area for permanent seat of the national government
  • 1792: Revised Pierre Charles L'Enfant's plan for the Federal City
  • 1793: Published first map of the Territory of Columbia
  • 1794: Appointed commissioner to lay out the town of Presque Isle (now Erie), Pa.
  • 1796: Commissioned to survey boundary between the United States and Florida
  • 1803: Published The Journal of Andrew Ellicott. Philadelphia: Printed by Budd & Bartram for Thomas Dobson
  • 1811: Surveyed Georgia-South Carolina boundary
  • 1813 - 1820 : Professor of mathematics, United States Military Academy, West Point, N.Y.
  • 1818 - 1820 : Chief American surveyor to establish the United States-Canadian border
  • 1820, Aug. 28: Died, West Point, N.Y.

From the guide to the Andrew Ellicott Papers, 1777-1829, (Manuscript Division Library of Congress)


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  • Surveyors--History
  • Indians of North America--Government relations
  • Surveying--Georgia
  • Surveying--Washington (D.C.)
  • Surveying--Pennsylvania
  • Astronomy
  • Meteorology--Observations
  • Surveying--South Carolina
  • World politics
  • Conspiracies--United States


  • Surveyors
  • Mathematicians


  • Erie (Pa.) (as recorded)
  • South Carolina (as recorded)
  • United States (as recorded)
  • Carlisle (Pa.) (as recorded)
  • Mississippi River (as recorded)
  • United States (as recorded)
  • Canada (as recorded)
  • Natchez (Miss.) (as recorded)
  • Philadelphia (Pa.) (as recorded)
  • Pittsburgh (Pa.) (as recorded)
  • Florida (as recorded)
  • Natchez (Miss.) (as recorded)
  • Mississippi River. (as recorded)
  • Georgia (as recorded)
  • Washington (D.C.) (as recorded)