1787 in Pennsylvania

← 1786 1785 1784 1787 in Pennsylvania → 1788 1789 1790
Decades:	1760s 1770s 1780s 1790s 1800s
See also:	History of Pennsylvania Historical outline of Pennsylvania List of years in Pennsylvania 1787 in the United States

The following is a list of events of the year 1787 in Pennsylvania .

Events

• May 25 to September 17: The Constitutional Convention took place in Philadelphia. ^[1]
• September 17: The Signing of the United States Constitution occurs at Independence Hall in Philadelphia. ^[2]
• December 12: The Proprietary Province of Pennsylvania officially becomes the State of Pennsylvania. ^[3]

See also

• 1787 in the United States

References

1. Vaughan, Harold Cecil (1976). The Constitutional Convention, 1787: The Beginning of Federal Government in America. Franklin Watts. ISBN   978-0-531-01104-1.
2. "The Writings, vol. 4 (1787) | Online Library of Liberty". oll.libertyfund.org. Retrieved August 11, 2025.
3. "Overview of Pennsylvania History - 1776-1861: Independence to the Civil War". PA.gov. Pennsylvania Historical & Museum Commission.