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History · Grades 4–5

When Each State Joined the Union: Western States

A fact sheet of the date each state in the West 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 West: When Each State Joined

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

NameDate
No.StateJoined
31CaliforniaSept. 9, 1850
33OregonFeb. 14, 1859
36NevadaOct. 31, 1864
38ColoradoAug. 1, 1876
41MontanaNov. 8, 1889
42WashingtonNov. 11, 1889
43IdahoJuly 3, 1890
44WyomingJuly 10, 1890
45UtahJan. 4, 1896
47New MexicoJan. 6, 1912
48ArizonaFeb. 14, 1912
49AlaskaJan. 3, 1959
50HawaiiAug. 21, 1959

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.