While some Roman era artifacts have been discovered, the village of Gansingen is first mentioned in 1240 as Gansungen.

Until the creation of the Helvetic Republic in 1797 it belonged to the court of Bernau in the Austrian herrschaft of Laufenburg.

In 1805, the pastor Johann Nepomuk Brentano built a girls' school in the village.

Because of crop failures in the mid-19th Century, the village population decreased after a wave of emigration.

Until the 20th Century, the major economic sources in Gansingen were agriculture and light manufacturing.

Of the rest of the land, 0.68 square kilometers (0.26 sq mi) or 7.8% is settled (buildings or roads), 0.02 km2 (4.9 acres) or 0.2% is either rivers or lakes.

35.5% of the total land area is heavily forested and 2.4% is covered with orchards or small clusters of trees.

The blazon of the municipal coat of arms is Azure a Goose Argent rising beaked and membered Or on Coupeaux Vert.

[8] The age distribution, as of 2008[update], in Gansingen is; 86 children or 9.0% of the population are between 0 and 9 years old and 123 teenagers or 12.9% are between 10 and 19.

[10] About 74.8% 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], 703 or 75.8% were Roman Catholic, while 145 or 15.6% belonged to the Swiss Reformed Church.