Amelia Bloomer grew up in Homer, New York. Although her education was limited to a few years, she was able to become a teacher at the age of 17. In 1840, she met and married a man named Dexter Bloomer, who ran a newspaper called the Seneca Falls County Courier. They moved to Seneca Falls where she became involved in local activism. Dexter suggested she begin to write columns in the paper, which earned her notoriety among the activist community.
After she started writing for the paper, Dexter was elected postmaster. He appointed her as his assistant. This enabled her to make her office the unofficial headquarters of the town's women's rights movement. Her adoption and promotion of bloomers, which came to symbolize the movement, garnered criticism from both conservative men and women.
She supported women's rights in general, but the primary thrust of her activism was temperance (she also strongly supported suffrage). She did attend the 1848 Seneca Falls Convention (the first women's rights convention in the country) but did not sign the Declaration of Sentiments, which was the document stating the convention's resolutions. Her unwavering commitment to temperance was not shared by other women activists, who thought other causes of the women's rights movement were more important. In 1851, she introduced Elizabeth Cady Stanton to Susan B. Anthony, which started the decades-long partnership between the two women.
Amelia and Dexter moved to Iowa in 1854. A year earlier she sold The Lilly, as it was too difficult to manage. In Iowa, she was president of the Iowa Woman Suffrage Association between 1871-1873. She continued to advocate for women's rights until she died in 1894 at the age of 76. She is buried in Council Bluffs, Iowa. Dexter published a compilation of Amelia's writings in 1895 (see link below).