[2] Alsace Township was established on March 3, 1745, following a petition to the Pennsylvania Court of Quarter Sessions.

The township was given its name in deference to the original settlers, who came from Alsace, German Empire in present-day France.

Large areas of land were cleared for agricultural production, streams were harnessed for milling, and churches were built for spiritual and social needs.

[3] According to the U.S. Census Bureau, the township has a total area of 12.2 square miles (32 km2), all land.

[5] Pennsylvania Route 12 is the only numbered highway serving Alsace Township.