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History · Grades 4–5

When Each State Joined the Union: Northeastern States

A fact sheet of the date each state in the Northeast joined the Union, in order, with real dates checked against their sources.

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History · United StatesAges 9–13 · Grades 4–7

The Northeast: When Each State Joined

No. is the order each state joined the United States. Delaware was first; Hawaii was 50th.

NameDate
No.StateJoined
2PennsylvaniaDec. 12, 1787
3New JerseyDec. 18, 1787
5ConnecticutJan. 9, 1788
6MassachusettsFeb. 6, 1788
9New HampshireJune 21, 1788
11New YorkJuly 26, 1788
13Rhode IslandMay 29, 1790
14VermontMar. 4, 1791
23MaineMar. 15, 1820

How to use it

  1. Read the dates and find the oldest first.
  2. Look for clusters: many states joined in the same few years.
  3. Use it as a reference for the order and timeline sheets.
  4. Pair it with the US states map quiz.

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Play it, too

US States Map QuizFind every state on the map against the clock. Free, in the browser.