Holderbank is a municipality in the district of Lenzburg in the canton of Aargau in Switzerland.

Archeological discoveries indicate that the area around Holderbank has been occupied since the Neolithic era.

Discoveries include; individual items from both the Neolithic and Bronze Ages, Roman era ruins and ceramics, and Alamanni graves.

The modern municipality of Holderbank is first mentioned in 1259 as in Halderwange though this is from a 14th Century copy of the original.

[3] Portions of the village were owned by Murbach Abbey, though they sold their holdings to the Habsburgs in 1291.

The Habsburgs promptly transferred the land around Holderbank to their vassals the von Wildegg family.

In addition to land, the von Wildeggs also acquired the right to low justice in the village.

After the Reformation, in 1565 the villages of Möriken and Wildegg became part of the Holderbank parish.

[3] Holderbank has an area, as of 2009[update], of 2.32 square kilometers (0.90 sq mi).

The blazon of the municipal coat of arms is Gules an Elder-tree proper issuant from a circular Bench Argent.

[8] The age distribution, as of 2008[update], in Holderbank is; 90 children or 10.4% of the population are between 0 and 9 years old and 77 teenagers or 8.9% are between 10 and 19.

[10] About 59.4% of the total households were owner occupied, or in other words did not pay rent (though they may have a mortgage or a rent-to-own agreement).

[8] From the 2000 census[update], 231 or 28.7% were Roman Catholic, while 388 or 48.3% belonged to the Swiss Reformed Church.