The remains of a Roman era Rhine fortifications watchtower have been discovered in Felsenau.

After the conquest of Aargau in 1415 it was part of the Swiss Confederation controlled County of Baden.

The Freiherr of Bernau granted the Knights Hospitaller extensive property, which became the Commandry of Leuggern in 1248.

They also possessed other properties that they, Count Rudolf von Habsburg and, after 1239, Ulrich of Klingen were unsuccessfully fighting over.

The Grand Master merged the two Commandry together into a single unit, though each house had its own prior.

[4] The conquest of Aargau in 1415 brought the two religious houses under the vogt of the Acht Orte of the Swiss Confederation.

Among the important priors in Leuggern was Franz von Sonnenberg of Lucerne, whose 1678 coat of arms adorns the gatehouse.

In 1816 the village of Böttstein and Oberleibstadt separated from Greater Leuggern to form independent municipalities.

The neo-classical-gothic revival village church was built in 1851–53 by Caspar Joseph Jeuch.

Until 1971, within the political municipality of Leuggern, there were five different Bürgergemeinden that held separate meetings over their infrastructure tasks.

[3] The municipality is located in the Zurzach district, on the western side of the Aare river.

It consists of the villages of Leuggern, Gippingen, Hettenschwil and Etzwiland as well as the hamlets of Felsenau, Hagenfirst, Fehrental and Schlatt.

[5] The blazon of the municipal coat of arms is Gules a Maltese Cross throughout Argent over an Annulet of the same.

[6] The community uses the badge of the Knights Hospitaller in a red field as its arms, in memory of the commandery which is mentioned in records from 1236.

The officiating pastor of Leuggern is, by virtue of his office, a chaplain of magistral grace of the Order of Malta.

[9] The age distribution, as of 2008[update], in Leuggern is; 172 children or 8.3% of the population are between 0 and 9 years old and 286 teenagers or 13.8% are between 10 and 19.

[12] About 68.3% 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).

[16] The historical population is given in the following table:[3][11] The Koblenz Aar railway bridge (which is shared with Koblenz) and the ruined Roman watchtower over the Rhine at Im Sand-Felsenau are listed as Swiss heritage sites of national significance.