Argonia is a city in Sumner County, Kansas, United States.

[4] In 1887, Susanna M. Salter became the first woman to win political office in United States history when she was elected Mayor of Argonia as a member of the Prohibition Party.

[5] According to the United States Census Bureau, the city has a total area of 0.66 square miles (1.71 km2), all of it land.

[6] The 2020 United States census counted 456 people, 189 households, and 120 families in Argonia.

There were 229 housing units at an average density of 328.1 per square mile (126.7/km2).

33.3% of households consisted of individuals and 14.8% had someone living alone who was 65 years of age or older.

There were 244 housing units at an average density of 369.7 per square mile (142.7/km2).

33.8% of all households were made up of individuals, and 14.8% had someone living alone who was 65 years of age or older.

34.2% of all households were made up of individuals, and 22.7% had someone living alone who was 65 years of age or older.

The community is served by Argonia USD 359 public school district.