La Cygne (pronounced /leɪ ˈsiːn/ lay SEEN) is a city in Linn County, Kansas, United States,[1] and situated along the Marais des Cygnes River.

[3] The city is named after the Marais des Cygnes River which is a French translation of an Osage appellation meaning "marsh of the swans".

[4] La Cygne was founded in 1869 as soon as the people were assured of the building of a track for the Missouri River, Ft. Scott & Gulf Railroad.

La Cygne was incorporated on January 14, 1870, and a board of trustees was appointed.

In the fall of that year the town had grown so that it had inhabitants enough to organize as a city of the third class, and F. A. Foote was elected the first mayor.

It was a commodious two-story brick building containing the graded and high schools.

A flour mill was built in 1870; a bank was started in 1871; the La Cygne organ factory was another early commercial enterprise, but it did not flourish.

[5] The suspicious death of Alonzo Brooks in 2004 was featured in the fourth episode "No Ride Home" of the fifteenth season of Unsolved Mysteries TV series in 2020.

It is four miles (6 km) west of U.S. Route 69 on K-152; La Cygne Lake is east of US-69.

[6] The climate in this area is characterized by hot, humid summers and generally mild to cool winters.

[7] The 2020 United States census counted 1,050 people, 430 households, and 258 families in La Cygne.

35.1% of households consisted of individuals and 16.3% had someone living alone who was 65 years of age or older.

29.3% of all households were made up of individuals, and 16.7% had someone living alone who was 65 years of age or older.

30.9% of all households were made up of individuals, and 18.1% had someone living alone who was 65 years of age or older.