After the conquest of the Aargau in 1415, the Bishop and the County of Baden continued to dispute the rights over the village.

After 1269 the low court right was held by the Teutonic Knights through their Commandry of Beuggen.

The hamlet of Husen was under the low court of the Knights Hospitaller Commandry of Leuggern.

St. Martin's Church was built in 1977, incorporating the older baroque choir and tower.

This has led to a population increase, and since the 1970s a number of new single-and multi-family neighborhoods have been built.

[3] In accordance with the resolution of the Tagsatzung in 1678, Jews were allowed to settle in the communities of the Surb valley.

[5] Beginning in 1603, the deceased Jews of the Surbtal communities were buried on a small Rhein river island, the so-called Judenäule ("Jew's island") which was leased by the Jewish community.

As the island was repeatedly flooded and devastated, in 1750 the Surbtal Jews asked the Tagsatzung to establish a cemetery in the vicinity of their communities in the Surb valley.

[6][7] The Jewish population was fairly well tolerated (except for the Zwetschgenkrieg or "plum war" riots in 1802), self-managed and maintained its own school.

[5] They were under the high and low courts of the Baden bailiff and had to buy "protection and safety" letters from the authorities.

[8] It wasn't until 1876 that Jews were granted full equality in civil rights and allowed to travel.

Napoleon Bonaparte lacked the troops to bring peace to Switzerland, and also he needed the Swiss regiments for his campaigns.

Of the rest of the land, 1.22 km2 (0.47 sq mi) or 9.6% is settled (buildings or roads), 0.01 km2 (2.5 acres) or 0.1% is either rivers or lakes.

It consists of the village of Lengnau and the hamlets of Degermoos, Husen, Himmelrich and Vogelsang.

The blazon of the municipal coat of arms is Gules a Horse trippant Argent on a Base Vert.

[13] The age distribution, as of 2008[update], in Lengnau is; 340 children or 13.8% of the population are between 0 and 9 years old and 335 teenagers or 13.6% are between 10 and 19.

[16] About 57.7% 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).

[20] The historical population is given in the following table:[3][15] The Synagogue on Zürichstrasse is listed as a Swiss heritage site of national significance.

[21] The hamlets of Husen and Vogelsang and the entire village of Lengnau are designated as part of the Inventory of Swiss Heritage Sites.

[14] From the 2000 census[update], 1,417 or 62.0% were Roman Catholic, while 475 or 20.8% belonged to the Swiss Reformed Church.