Olmitz is a city in Barton County, Kansas, United States.

[4] It was named after the city of Olomouc (German: Olmütz), in Austria-Hungary (today in the Czech Republic).

[4] According to the United States Census Bureau, the city has a total area of 0.17 square miles (0.44 km2), all of it land.

[6] The 2020 United States census counted 90 people, 40 households, and 29 families in Olmitz.

There were 56 housing units at an average density of 352.2 per square mile (136.0/km2).

27.5% of households consisted of individuals and 15.0% had someone living alone who was 65 years of age or older.

[8] The 2016-2020 5-year American Community Survey estimates show that the median family income was $100,000 (+/- $74,556).

33.3% of all households were made up of individuals, and 24.1% had someone living alone who was 65 years of age or older.

37.1% of all households were made up of individuals, and 17.7% had someone living alone who was 65 years of age or older.

There were 11.9% of families and 12.9% of the population living below the poverty line, including 14.6% of under eighteens and 7.4% of those over 64.