1776: New Jersey gives the vote to women owning more than $250. Later the state reconsidered and women were no longer allowed to vote.
1837: Kentucky gives some women suffrage in school elections.
1861: Kansas enters the Union; the new state gives its women the right to vote in local school elections.
1869: Wyoming territory constitution grants women the right to vote and to hold public office.
1870: Utah territory gives full suffrage to women.
1893: The male electorate in Colorado votes "yes" on woman suffrage.
1894: Some cities in Kentucky and Ohio give women the vote in school board elections.
1895: Utah amends its constitution to grant women suffrage.
1896: Idaho adopts a constitutional amendment granting suffrage to women.
1902: Kentucky repeals limited school board election voting rights for women.
1910: Washington state votes for woman suffrage.
1911: California gives women the vote.
1912: Male electorates in Michigan, Kansas, Oregon and Arizona approve state constitutional amendments for woman suffrage. Wisconsin defeats a proposed suffrage amendment.
1912: Kentucky restores limited voting rights for women in school board elections.
1920: On August 26, a constitutional amendment is adopted when Tennessee ratifies it, granting full woman suffrage in all states of the United States.
1929: Puerto Rico's legislature grants women the right to vote, pushed by the United States Congress to do so.
1971: The United States lowers the voting age for both men and women to eighteen
http://womenshistory.about.com/od/suffrageoverview/a/timeline_us.htm
