Portis is a city in Osborne County, Kansas, United States.

The Central Branch Railroad routed through the city and built a station.

To prevent conflicts with Bethany, Missouri, it was decided to change the name of this station.

[6] According to the United States Census Bureau, the city has a total area of 0.25 square miles (0.65 km2), all land.

The 2020 United States census counted 86 people, 41 households, and 25 families in Portis.

There were 60 housing units at an average density of 229.9 per square mile (88.8/km2).

39.0% of households consisted of individuals and 7.3% had someone living alone who was 65 years of age or older.

There were 78 housing units at an average density of 312.0 per square mile (120.5/km2).

40.0% of all households were made up of individuals, and 22% had someone living alone who was 65 years of age or older.

39.7% of all households were made up of individuals, and 19.0% had someone living alone who was 65 years of age or older.

There were 3.6% of families and 6.6% of the population living below the poverty line, including no under eighteens and 13.6% of those over 64.