The Wahpekute Dakota resided primarily along the Minnesota River Valley and its tributaries, including areas within Lyon County.

The first white settlers arrived in Amiret Township in 1868, with Charles and Lafayette Grover staking their claims.

In 1879, it was renamed "Amiret Township" in honor of Amiretta Sykes, the wife of a prominent railroad official, M.L.

A village sprang up around the railroad station, initially called "Saratoga" (located about three miles southwest of present-day Amiret).

The village and township continued to grow throughout the late 19th and early 20th centuries, primarily centered around agriculture.

[4][5][3] According to the United States Census Bureau, the township has a total area of 36.3 square miles (94 km2), all land.