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

[4] According to the United States Census Bureau, the city has a total area of 0.11 square miles (0.28 km2), all of it land.

[5] The 2020 United States census counted 75 people, 30 households, and 19 families in Mayfield.

36.7% of households consisted of individuals and 20.0% had someone living alone who was 65 years of age or older.

[7] The 2016-2020 5-year American Community Survey estimates show that the median family income was $74,844 (+/- $26,651).

24.4% of all households were made up of individuals, and 13.3% had someone living alone who was 65 years of age or older.

16.7% of all households were made up of individuals, and 6.3% had someone living alone who was 65 years of age or older.

There were 7.3% of families and 4.1% of the population living below the poverty line, including no under eighteens and none of those over 64.

The community is served by Wellington USD 353 public school district.