[5] Uniontown was first settled in 1867 by Thomas Freeborn Montgomery, who had travelled west in order to escape the violence of the American Civil War in 1863.

Agreement could not be reached on a town name until the following year, when Joseph Cataldo, a Jesuit priest and missionary, suggested the name "Uniontown" after the similarly-named creek and flat nearby.

As a result, several of these businesses relocated three miles north to the neighboring rival town of Colton.

Despite this, Montgomery remained active in the real estate industry in Uniontown until his passing in 1883, which was allegedly the result of a dispute that turned deadly on December 8 of that year.

According to the United States Census Bureau, the town has a total area of 0.93 square miles (2.41 km2), all of it land.

[8] This region experiences warm (but not hot) and dry summers, with no average monthly temperatures above 71.6 °F.

The vast majority of the early settlers of Uniontown were primarily Swiss and German immigrants who practiced Roman Catholicism.

Joehren also led to the Benedictine Sisters relocating from Uniontown to Colton in 1894 and ultimately establishing the St. Gertrude Monastery in Cottonwood, Idaho in 1906.

The church was designed by Herman Preusse and Julius Zittel and is built out of bricks in the Romanesque style, with two towers flanking the façade, and a front gable topped by a seven-foot statue of the Blessed Mother.

The church has resisted all attempts and proposals to modernize the interior and has insisted on keeping it as is, the only allowed noticeable change being the installment of an altar to celebrate the Novus Ordo facing the people.