Olivet is a city in Osage County, Kansas, United States.

By the end of its first year, the town contained a general store, a hotel, a sawmill, and a wagon and blacksmith shop.

[6] According to the United States Census Bureau, the city has a total area of 0.26 square miles (0.67 km2), all of it land.

[7] Olivet is part of the Topeka, Kansas Metropolitan Statistical Area.

The 2020 United States census counted 73 people, 44 households, and 28 families in Olivet.

29.5% of households consisted of individuals and 20.5% had someone living alone who was 65 years of age or older.

[9] The 2016-2020 5-year American Community Survey estimates show that the median family income was $61,250 (+/- $3,699).

28.6% of all households were made up of individuals, and 17.2% had someone living alone who was 65 years of age or older.

There were no families and 7.4% of the population living below the poverty line, including no under eighteens and 21.4% of those over 64.

The community is served by Marais des Cygnes Valley USD 456 public school district.