Menziken is first mentioned in 1045 as
Manzinchouen though that comes from a 14th-century copy of the original document. In 1295 it was mentioned as
Menzchon. However, the current site of Menziken was settled earlier. Both
Roman era ruins and
Alamanni graves have been discovered in the municipality. During the
High Middle Ages it was owned by the
Counts of Lenzburg. In 1173 it passed over to the
Kyburgs and following the extinction of the Kyburg line, in 1273 it passed to the
Habsburgs. The Habsburgs held the rights to
high justice while their
vassals, the Lords of Reinach, held the rights to low justice. From the conquest of Aargau in 1415 until the creation of the
Helvetic Republic in 1798, the village was under
Bernese domination. At that time, Menziken belonged to the district () of Lenzburg. With the creation of the Canton of Aargau through the
Act of Mediation in 1803, Menziken became a municipality in the new canton. During the
Middle Ages Menziken was part of the
Catholic parish of Pfeffikon. Following the introduction of the
Protestant Reformation in 1528, it was initially part of Gontenschwil parish and then of the parish of Reinach. It became the independent parish of Menziken-Burg in 1889–90, with the construction of its own church. The Catholic Menziken-Reinach Diaspora parish was created in 1906-07 when St Anne's Church was built in the municipality. In 1729 a cotton factory was built in the municipality. This factory was followed by numerous weavers, spinners and dyers, which until the 19th century provided a major source of income. In 1838 Samuel Weber opened a cigar factory in the village which led to the cigar industry dominating the entire upper
Wynental. The cigar companies represented a major employer until the second half of the 20th century. Major employers in the early 21st century include the Schlör AG (which had developed from the brewery founded in 1888 and today produce soft drinks, fruit and apple juice) and Alu Menziken, which produces metal goods. Since 1904 Menziken has been the terminus of the
Wynental- und Suhrentalbahn. ==Geography==